Nissan X-Trail 32. Manual - part 1407

B24D4 A/C CONTROL COMMUNICATION

HAC-103

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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B24D4 A/C CONTROL COMMUNICATION

DTC Description

INFOID:0000000010939760

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-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:0000000010939761

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-84, "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.

HAC-104

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

B24D4 A/C CONTROL COMMUNICATION

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-125, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

(Approx.)

A/C control

Connector

Terminal

M135

4

Ground

Battery voltage

A/C control

—

Continuity

Connector

Terminal

M135

1

Ground

 Existed

A/C control

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M135

8

M174

73

 

Existed

A/C control

—

Continuity

Connector

Terminal

M135

8

Ground

 Not existed

POWER SUPPLY AND GROUND CIRCUIT

HAC-105

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

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POWER SUPPLY AND GROUND CIRCUIT

A/C AUTO AMP.

A/C AUTO AMP. : Diagnosis Procedure

INFOID:0000000010939762

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse [No. 20 (without stop/start system), located in fuse block (J/B)], [No. 59 (with stop/start
system)].
NOTE:
Refer to 

PG-84, "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-126, "Removal and Installation"

.

NO

>> Repair harness or connector.

A/C CONTROL

A/C CONTROL : Diagnosis Procedure

INFOID:0000000010939763

1.

CHECK FUSE

1.

Turn ignition switch OFF.

2.

Check 10 A fuse [No. 20 (without stop/start system), located in fuse block (J/B)], [No. 59 (with stop/start
system)].
NOTE:
Refer to 

PG-84, "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

M174

41

Ground

11 - 14 V

A/C auto amp.

—

Continuity

Connector

Terminal

M174

43

Ground

Existed

HAC-106

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONING]

POWER SUPPLY AND GROUND CIRCUIT

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-125, "Removal and Installation"

.

NO

>> Repair harness or connector.

+

−

Voltage

A/C control

Connector

Terminal

M135

4

Ground

11 - 14 V

A/C control

—

Continuity

Connector

Terminal

M135

1

Ground

Existed