Qashqai J11. Heater & Air conditioning Control System - part 7

B24B9 MODE DOOR MOTOR

HAC-97

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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B24B9 MODE DOOR MOTOR

DTC Logic

INFOID:0000000010432222

DTC DETECTION LOGIC

POSSIBLE CAUSE

[CIRCUIT SHORT TO BATTERY]

• Harness and connector (Mode door motor circuit is shorted to battery)
• Mode door motor
• A/C auto amp.

[CIRC SHORT TO GRND OR OPEN]

• Harness and connector (Mode door motor circuit is open or shorted to ground)
• Mode door motor
• A/C auto amp.

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-97, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010432223

1.

CHECK MODE DOOR MOTOR POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect mode door motor connector.

3.

Turn ignition switch ON.

4.

Check voltage between mode door motor harness connector and ground for several seconds after press-
ing the MODE VENT/FOOT/DEF switch.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24B9

MODE DOOR MOTOR
(Mode door motor)

[CIRCUIT SHORT TO BATTERY]

Detect short to battery circuit of mode door motor cir-
cuits.

[CIRC SHORT TO GRND OR 
OPEN]

Detect open or short to ground circuit of mode door 
motor circuits.

+

−

Voltage

Mode door motor

Connector

Terminal

M342

2

Ground

11 - 14 V

HAC-98

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24B9 MODE DOOR MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Repair harness or connector.

4.

CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between mode door motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK MODE DOOR MOTOR DRIVE SIGNAL CIRCUIT FOR SHORT

1.

Check continuity between mode door motor harness connector and ground.

2.

Check voltage between mode door motor harness connector and ground.

Mode door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M342

2

M140

20

Existed

Mode door motor

—

Continuity

Connector

Terminal

M342

2

Ground

Not existed

Mode door motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M342

1

M140

11

Existed

3

12

4

32

6

33

Mode door motor

—

Continuity

Connector

Terminal

M342

1

Ground

Not existed

3

4

6

B24B9 MODE DOOR MOTOR

HAC-99

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK MODE DOOR MOTOR

Check mode door motor. Refer to 

HAC-99, "Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Replace mode door motor. Refer to 

HAC-140, "MODE DOOR MOTOR : Removal and Installa-

tion"

.

Component Inspection

INFOID:0000000010432224

1.

CHECK MODE DOOR MOTOR

1.

Remove mode door motor. Refer to 

HAC-140, "MODE DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between mode door motor terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace mode door motor. Refer to 

HAC-140, "MODE DOOR MOTOR : Removal and Installa-

tion"

.

+

−

Voltage

Mode door motor

Connector

Terminal

M342

1

Ground

0 V

3

4

6

Terminal

Resistance (

Ω

)

(Approx.)

2

1

90

3

4

6

HAC-100

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24BB LEFT AIR MIX DOOR MOTOR

B24BB LEFT AIR MIX DOOR MOTOR

DTC Logic

INFOID:0000000010432219

DTC DETECTION LOGIC

POSSIBLE CAUSE

[CIRCUIT SHORT TO BATTERY]

• Harness and connector [Air mix door motor (driver side) circuit is shorted to battery] (LHD models)
• Harness and connector [Air mix door motor (passenger side) circuit is shorted to battery] (RHD models)
• Air Mix door motor
• A/C auto amp.

[CIRC SHORT TO GRND OR OPEN]

• Harness and connector [Air mix door motor (driver side) circuit is open or shorted to ground] (LHD models)
• Harness and connector [Air mix door motor (passenger side) circuit is open or shorted to ground] (RHD

models)

• Air mix door motor
• A/C auto amp.

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-100, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010432220

1.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor LH connector.

3.

Turn ignition switch ON.

4.

Check voltage between air mix door motor LH harness connector and ground for several seconds after
operating the temperature control dial (driver side) while DUAL switch is OFF.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24BB

LEFT AIR MIX DOOR MOTOR
(Left side air mix door motor)

[CIRCUIT SHORT TO BATTERY]

Detect short to battery circuit of air mix door 
motor [driver side (LHD models), passenger 
side (RHD models)] circuits.

[CIRC SHORT TO GRND OR OPEN]

Detect open or short to ground circuit of air mix 
door motor [driver side (LHD models), passen-
ger side (RHD models)] circuits.

+

−

Voltage

Air mix door motor LH

Connector

Terminal

M352

2

Ground

11 - 14 V

B24BB LEFT AIR MIX DOOR MOTOR

HAC-101

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between air mix door motor LH harness connector and A/C auto amp. harness connec-
tor.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between air mix door motor LH harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Repair harness or connector.

4.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

DRIVE SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between air mix door motor LH harness connector and A/C auto amp. harness connec-
tor.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

DRIVE SIGNAL CIRCUIT FOR SHORT

1.

Check continuity between air mix door motor LH harness connector and ground.

Air mix door motor LH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M352

2

M140

40

Existed

Air mix door motor LH

—

Continuity

Connector

Terminal

M352

2

Ground

Not existed

Air mix door motor LH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M352

1

M140

1

Existed

3

2

4

21

6

22

HAC-102

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24BB LEFT AIR MIX DOOR MOTOR

2.

Check voltage between air mix door motor LH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

Check air mix door motor [driver side (LHD models), passenger side (RHD models)]. Refer to 

HAC-102,

"Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Replace air mix door motor [driver side (LHD models), passenger side (RHD models)]. Refer to

HAC-138, "AIR MIX DOOR MOTOR : Removal and Installation"

.

Component Inspection

INFOID:0000000010432221

1.

CHECK AIR MIX DOOR MOTOR [DRIVER SIDE (LHD MODELS), PASSENGER SIDE (RHD MODELS)]

1.

Remove air mix door motor [driver side (LHD models), passenger side (RHD models)]. Refer to 

HAC-138,

"AIR MIX DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between air mix door motor [driver side (LHD models), passenger side (RHD models)]
terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace air mix door motor [driver side (LHD models), passenger side (RHD models)]. Refer to

HAC-138, "AIR MIX DOOR MOTOR : Removal and Installation"

.

Air mix door motor LH

—

Continuity

Connector

Terminal

M352

1

Ground

Not existed

3

4

6

+

−

Voltage

Air mix door motor LH

Connector

Terminal

M352

1

Ground

0 V

3

4

6

Terminal

Resistance (

Ω

)

(Approx.)

2

1

90

3

4

6

B24BD RIGHT AIR MIX DOOR MOTOR

HAC-103

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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B24BD RIGHT AIR MIX DOOR MOTOR

DTC Logic

INFOID:0000000010432225

DTC DETECTION LOGIC

POSSIBLE CAUSE

[CIRCUIT SHORT TO BATTERY]

• Harness and connector [Air mix door motor (passenger side) circuit is shorted to battery] (LHD models)
• Harness and connector [Air mix door motor (driver side) circuit is shorted to battery] (RHD models)
• Air Mix door motor
• A/C auto amp.

[CIRC SHORT TO GRND OR OPEN]

• Harness and connector [Air mix door motor (passenger side) circuit is open or shorted to ground] (LHD mod-

els)

• Harness and connector [Air mix door motor (driver side) circuit is open or shorted to ground] (RHD models)
• Air mix door motor
• A/C auto amp.

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-103, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010432226

1.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect air mix door motor RH connector.

3.

Turn ignition switch ON.

4.

Check voltage between air mix door motor RH harness connector and ground for several seconds after
operating the temperature control dial (driver side) while DUAL switch is OFF.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24BD

RIGHT AIR MIX DOOR MOTOR
(Right side air mix door motor)

[CIRCUIT SHORT TO BATTERY]

Detect short to battery circuit of air mix door 
motor [passenger side (LHD models), driver 
side (RHD models)] circuits.

[CIRC SHORT TO GRND OR OPEN]

Detect open or short to ground circuit of air mix 
door motor [passenger side (LHD models), 
driver side (RHD models)] circuits.

+

−

Voltage

Air mix door motor RH

Connector

Terminal

M351

2

Ground

11 - 14 V

HAC-104

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24BD RIGHT AIR MIX DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

POWER SUPPLY CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connec-
tor.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

POWER SUPPLY CIRCUIT FOR SHORT

Check continuity between air mix door motor RH harness connector and ground.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Repair harness or connector.

4.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

DRIVE SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect A/C auto amp. connector.

3.

Check continuity between air mix door motor RH harness connector and A/C auto amp. harness connec-
tor.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

DRIVE SIGNAL CIRCUIT FOR SHORT

1.

Check continuity between air mix door motor RH harness connector and ground.

Air mix door motor RH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M351

2

M140

40

Existed

Air mix door motor RH

—

Continuity

Connector

Terminal

M351

2

Ground

Not existed

Air mix door motor RH

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M351

1

M140

9

Existed

3

10

4

30

6

31

B24BD RIGHT AIR MIX DOOR MOTOR

HAC-105

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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2.

Check voltage between air mix door motor RH harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair harness or connector.

6.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

Check air mix door motor [passenger side (LHD models), driver side (RHD models)]. Refer to 

HAC-105,

"Component Inspection"

.

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Replace air mix door motor [passenger side (LHD models), driver side (RHD models)]. Refer to

HAC-140, "MODE DOOR MOTOR : Removal and Installation"

.

Component Inspection

INFOID:0000000010432227

1.

CHECK AIR MIX DOOR MOTOR [PASSENGER SIDE (LHD MODELS), DRIVER SIDE (RHD MODELS)]

1.

Remove air mix door motor [passenger side (LHD models), driver side (RHD models)]. Refer to 

HAC-138,

"AIR MIX DOOR MOTOR : Removal and Installation"

.

2.

Check resistance between air mix door motor [passenger side (LHD models), driver side (RHD models)]
terminals. Refer to applicable table for the normal value. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace air mix door motor [passenger side (LHD models), driver side (RHD models)]. Refer to

HAC-300, "AIR MIX DOOR MOTOR : Removal and Installation"

.

Air mix door motor RH

—

Continuity

Connector

Terminal

M351

1

Ground

Not existed

3

4

6

+

−

Voltage

Air mix door motor RH

Connector

Terminal

M351

1

Ground

0 V

3

4

6

Terminal

Resistance (

Ω

)

(Approx.)

2

1

90

3

4

6

HAC-106

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24D4 A/C CONTROL COMMUNICATION

B24D4 A/C CONTROL COMMUNICATION

DTC Logic

INFOID:0000000010499359

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness and connector (A/C control circuit is open or shorted)
• A/C control
• A/C auto amp.

FAIL-SAFE

If a communication error exists between the A/C auto amp. and A/C control for 30 seconds or longer, air con-
ditioning is controlled under the following conditions: A/C auto amp. is controlled in the setting state before the
communication error occurs for following setting.
• Set temperature
• Air outlet
• Blower fan speed
• Air inlet
• A/C switch

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.

3.

Check DTC.

Is DTC detected?

YES

>> Refer to 

HAC-106, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010432230

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse [No. 14 (without stop/start system), located in fuse block (J/B)], [No. 76 (with stop/start
system)].
NOTE:
Refer to 

PG-104, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

2.

CHECK A/C CONTROL POWER SUPPLY

1.

Turn ignition switch OFF. 

2.

Disconnect A/C control connector. 

3.

Turn ignition switch ON. 

4.

Check voltage between A/C control harness connector and ground. 

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

B24D4

A/C CONTROL COMM
(Air conditioning control commu-
nication)

[BUS SIGNAL/MESSAGE ERROR]

A malfunction is detected in the signal that is 
sent from A/C control.

B24D4 A/C CONTROL COMMUNICATION

HAC-107

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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HAC

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Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between A/C control and fuse.

3.

CHECK A/C CONTROL GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Check continuity between A/C control harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK LIN COMMUNICATION SIGNAL CIRCUIT FOR OPEN

1.

Disconnect A/C auto amp. connector.

2.

Check continuity between A/C control harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK LIN COMMUNICATION SIGNAL CIRCUIT FOR SHORT

Check continuity between A/C control harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C control. Refer to 

HAC-128, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

(Approx.)

A/C control

Connector

Terminal

M6

4

Ground

5 V

A/C control

—

Continuity

Connector

Terminal

M6

1

Ground

 Existed

A/C control

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M6

8

M141

73

 Existed

A/C control

—

Continuity

Connector

Terminal

M6

8

Ground

 Not existed

HAC-108

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

A/C AUTO AMP.

A/C AUTO AMP. : Diagnosis Procedure

INFOID:0000000010432228

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse [No. 14 (without stop/start system), located in fuse block (J/B)], [No. 76 (with stop/start
system)].
NOTE:
Refer to 

PG-104, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

2.

CHECK A/C AUTO AMP. ACCESSORY POWER SUPPLY

1.

Disconnect A/C auto amp. connector. 

2.

Turn ignition switch ON. 

3.

Check voltage between A/C auto amp. harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between A/C auto amp. and fuse.

3.

CHECK A/C AUTO AMP. GROUND CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Check continuity between A/C auto amp. harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Repair harness or connector.

A/C CONTROL

A/C CONTROL : Diagnosis Procedure

INFOID:0000000010432229

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse [No. 14 (without stop/start system), located in fuse block (J/B)], [No. 76 (with stop/start
system)].
NOTE:
Refer to 

PG-104, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown. 

2.

CHECK A/C CONTROL POWER SUPPLY

1.

Turn ignition switch OFF.

+

−

Voltage

A/C auto amp.

Connector

Terminal

M141

41

Ground

11 - 14 V

A/C auto amp.

—

Continuity

Connector

Terminal

M141

43

Ground

Existed

POWER SUPPLY AND GROUND CIRCUIT

HAC-109

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

2.

Disconnect A/C control connector. 

3.

Turn ignition switch ON.

4.

Check voltage between A/C control harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector between A/C control and fuse block (J/B).

3.

CHECK A/C CONTROL GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between A/C control harness connector and ground. 

Is the inspection result normal?

YES

>> Replace A/C control. Refer to 

HAC-128, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

A/C control

Connector

Terminal

M6

4

Ground

11 - 14 V

A/C control

—

Continuity

Connector

Terminal

M6

1

Ground

Existed

HAC-110

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

BLOWER MOTOR

BLOWER MOTOR

Diagnosis Procedure

INFOID:0000000010432235

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check following fuses.

-

20 A fuse [Nos. 7 and 17, located in fuse block (J/B)]

NOTE:
Refer to 

PG-104, "Fuse, Connector and Terminal Arrangement"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.

2.

CHECKPOWER TRANSISTOR POWER SUPPLY

1.

Disconnect power transistor connector. 

2.

Turn ignition switch ON.

3.

Check voltage between power transistor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK BLOWER RELAY

1.

Turn ignition switch OFF.

2.

Check blower relay. Refer to 

HAC-113, "Component Inspection (Blower Relay)"

.

Is the inspection result normal?

YES

>> Repair harness or connector between power transistor and fuse.

NO

>> Replace blower relay.

4.

CHECK BLOWER MOTOR CONTROL CIRCUIT

1.

Turn ignition switch OFF.

2.

Connect power transistor connector. 

3.

Disconnect blower motor connector. 

4.

Turn ignition switch ON.

5.

Check voltage between blower motor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

CHECK BLOWER MOTOR CONTROL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect power transistor connector.

3.

Check continuity between power transistor harness connector and blower motor harness connector. 

+

−

Voltage

Blower motor

Connector

Terminal

M359

4

Ground

Battery voltage

+

−

Voltage

Blower motor

Connector

Terminal

M357

1

Ground

Battery voltage

BLOWER MOTOR

HAC-111

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Is the inspection result normal?

YES

>> Replace power transistor. Refer to 

HAC-136, "Removal and Installation"

.

NO

>> Repair harness or connector.

6.

CHECK BLOWER MOTOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect power transistor connector.

3.

Check continuity between power transistor harness connector and blower motor harness connector. 

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair harness or connector.

7.

CHECK POWER TRANSISTOR GROUND CIRCUIT

Check continuity between power transistor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair harness or connector.

8.

CHECK POWER TRANSISTOR CONTROL SIGNAL

1.

Connect power transistor connector and A/C auto amp. connector. 

2.

Turn ignition switch ON.

3.

Set air outlet to VENT. 

4.

Change fan speed from 1st – 7th, and check duty ratios between power transistor harness connector and
ground by using an oscilloscope. 
NOTE:
Calculate the drive signal duty ratio as shown in the figure.
T2 = Approx. 2.5 ms

Power transistor

Blower motor

Continuity

Connector

Terminal

Connector

Terminal

M360

5

M357

1

Existed

Power transistor

Blower motor

Continuity

Connector

Terminal

Connector

Terminal

M360

6

M357

2

Existed

Power transistor

—

Continuity

Connector

Terminal

M359

2

Ground

Existed

+

−

Condition

Duty ratio

(Approx.)

Voltage

Power transistor

Connector

Terminal

Fan speed (manual) 

Air outlet: VENT

For Europe 
and Russia

Except for Eu-
rope and Rus-

sia

M359

1

Ground

1st

21%

23%

2nd

24%

29%

3rd

31%

36%

4th

40%

44%

5th

54%

52%

6th

70%

61%

7th

100%

72%

JPIIA1646GB

HAC-112

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

BLOWER MOTOR

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

CHECK POWER TRANSISTOR CONTROL SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect power transistor connector and A/C auto amp. connector.

3.

Check continuity between power transistor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Repair harness or connector.

10.

CHECK BLOWER MOTOR FEEDBACK SIGNAL

When fan speed is set to OFF, and check voltage between power transistor harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

CHECK BLOWER MOTOR FEEDBACK SIGNAL CIRCUIT FOR OPEN

1.

Turn ignition switch OFF.

2.

Disconnect power transistor connector and A/C auto amp. connector.

3.

Check continuity between power transistor harness connector and A/C auto amp. harness connector. 

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to 

HAC-129, "Removal and Installation"

.

NO

>> Repair harness or connector.

12.

REPLACE POWER TRANSISTOR

1.

Turn ignition switch OFF.

2.

Replace power transistor. Refer to 

HAC-136, "Removal and Installation"

.

3.

Turn ignition switch ON.

4.

Change fan speed from 1st – 7th, and check that blower motor operates normally. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace blower motor. Refer to 

VTL-17, "Removal and Installation"

.

Component Inspection (Blower Motor)

INFOID:0000000010432236

1.

CHECK BLOWER MOTOR-I

1.

Remove blower motor. Refer to 

VTL-17, "Removal and Installation"

.

2.

Check that there is not any mixing foreign object in the blower motor. 

Is the inspection result normal?

Power transistor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M359

3

M140

27

Existed

+

−

Voltage

Power transistor

Connector

Terminal

M359

1

Ground

Battery voltage

Power transistor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M359

1

M140

37

Existed