Infiniti G37 Coupe. Manual - part 1157

CLUTCH PEDAL POSITION SWITCH

SEC-125

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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1.

Disconnect BCM connector M122 and ASCD clutch switch connector.

2.

Check continuity between ASCD clutch switch harness connector and BCM harness connector.

3.

Check continuity between ASCD clutch switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair harness or connector.

5.

CHECK ASCD CLUTCH SWITCH

Refer to 

SEC-126, "Component Inspection (ASCD Clutch Switch)"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace ASCD clutch switch.

6.

CHECK ICC CLUTCH SWITCH POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect ICC clutch switch connector.

3.

Check voltage between ICC clutch switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>>

Check the following.

• 10A fuse [No.3, located in the fuse block (J/B)]
• Harness for open or short between ICC clutch switch and fuse

7.

CHECK ICC CLUTCH SWITCH INPUT SIGNAL

1.

Disconnect ICC clutch switch connector.

2.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair harness or connector.

8.

CHECK CIRCUIT

1.

Disconnect BCM connector M122 and ICC clutch switch connector.

2.

Check continuity between ICC clutch switch harness connector and IPDM E/R harness connector.

ASCD clutch switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

E108

2

M122

99

Existed

ASCD clutch switch

Ground

Continuity

Connector

Terminal

E108

2

Not existed

(+)

(–)

Voltage (V)

ICC clutch switch

Connector

Terminal

E113

1

Ground

Battery voltage

(+)

(–)

Condition

Voltage (V)

(Approx.)

BCM

Connector

Terminal

M122

99

Ground

Clutch pedal

Not depressed

Battery voltage

Depressed

0

SEC-126

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

CLUTCH PEDAL POSITION SWITCH

3.

Check continuity between ICC clutch switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair harness or connector.

9.

CHECK ICC CLUTCH SWITCH

Refer to 

SEC-126, "Component Inspection (ICC Clutch Switch)"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace ICC clutch switch.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (ASCD Clutch Switch)

INFOID:0000000001908949

1.

CHECK ASCD CLUTCH SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect ASCD clutch switch connector.

3.

Check continuity between ASCD clutch switch terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ASCD clutch switch.

Component Inspection (ICC Clutch Switch)

INFOID:0000000001908950

1.

CHECK ICC CLUTCH SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect ICC clutch switch connector.

3.

Check continuity between ICC clutch switch terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC clutch switch.

ICC clutch switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

E113

2

M122

99

Existed

ICC clutch switch

Ground

Continuity

Connector

Terminal

E113

2

Not existed

ASCD clutch switch

Condition

Continuity

Connector

Terminal

E108

1

2

Clutch pedal

Not depressed

Existed

Depressed

Not existed

ICC clutch switch

Condition

Continuity

Connector

Terminal

E113

1

2

Clutch pedal

Not depressed

Existed

Depressed

Not existed

KEY CYLINDER SWITCH

SEC-127

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

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KEY CYLINDER SWITCH

Description

INFOID:0000000001700053

Power window main switch detects condition of the door key cylinder switch and transmits to BCM as the
LOCK or UNLOCK signals. 

Component Function Check

INFOID:0000000001700054

1.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

Check (“KEY CYL LK-SW”, “KEY CYL UN-SW”) in “DATA MONITOR” mode for “POWER DOOR LOCK SYS-
TEM” with CONSULT-III. Refer to 

DLK-51, "DOOR LOCK : CONSULT-III Function (BCM - DOOR LOCK)"

.

Is the inspection result normal?

YES

>> Key cylinder switch is OK.

NO

>> Refer to 

SEC-127, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001700055

1.

CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between power window main switch harness connector and ground.

Is the inspection result normal?

YES

>> Replace power window main switch. Refer to 

PWC-92, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK DOOR KEY CYLINDER SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect power window main switch connector and driver side door lock assembly (door key cylinder
switch) connector.

3.

Check continuity between power window main switch connector and driver side door lock assembly (door
key cylinder switch) connector.

4.

Check continuity between power window main switch connector and ground.

Monitor item

Condition

KEY CYL LK-SW

Lock

: ON

Neutral / Unlock

: OFF

KEY CYL UN-SW

Unlock

: ON

Neutral / Lock

: OFF

Terminals

Key position

Voltage (V)

(Approx.)

(+)

(–)

Power window main 

switch connector

Terminal 

D8

6

Ground

Lock

0

Neutral / Unlock

5

7

Unlock

0

Neutral / Lock

5

Power window main switch connec-

tor

Terminal

Driver side door lock assembly (door key cylinder 

switch) connector

Terminal

Continuity

D8

6

D15

6

Existed

7

5

SEC-128

< COMPONENT DIAGNOSIS >

[INTELLIGENT KEY SYSTEM]

KEY CYLINDER SWITCH

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK DOOR KEY CYLINDER SWITCH GROUND CIRCUIT

Check continuity between driver side door lock assembly connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK DOOR KEY CYLINDER SWITCH

Check door key cylinder switch. 
Refer to 

SEC-128, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> Replace driver side door lock assembly (door key cylinder switch). Refer to 

DLK-230, "DOOR

LOCK : Removal and Installation"

.

Component Inspection

INFOID:0000000001700056

COMPONENT INSPECTION

1.

CHECK DOOR KEY CYLINDER SWITCH

Check driver side door lock assembly (door key cylinder switch).

Is the inspection result normal?

YES

>> Key cylinder switch is OK.

NO

>> Replace driver side door lock assembly (door key cylinder switch). Refer to 

DLK-230, "DOOR

LOCK : Removal and Installation"

.

Power window main switch connec-

tor

Terminal

Ground

Continuity 

D8

6

Not existed

7

Driver side door lock assembly connector

Terminal

Ground

Continuity 

D15

4

Existed

Driver side door lock assembly (door key cylinder 

switch)

Key position

Continuity

 Terminal

5 

4

Unlock

Existed

Neutral / Lock

Not existed

6

Lock

Existed

Neutral / Unlock

Not existed