Infiniti G35 (V35). Manual - part 440

ASCD BRAKE SWITCH

EC-641

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M/T MODELS

1. 

CHECK OVERALL FUNCTION-I

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.

3.

Check “BRAKE SW1” indication under the following conditions.

 Without CONSULT-II

1.

Turn ignition switch ON.

2.

Check voltage between ECM terminal 108 and ground under the
following conditions.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

CONDITION

INDICATION

Brake pedal and/or clutch pedal: Slightly depressed

OFF

Brake pedal and clutch pedal: Fully released

ON

SEC011D

CONDITION

VOLTAGE

Brake pedal and/or clutch pedal: Slightly depressed

Approximately 0V

Brake pedal and clutch pedal: Fully released

Battery voltage

MBIB0061E

EC-642

ASCD BRAKE SWITCH

2. 

CHECK OVERALL FUNCTION-II

 With CONSULT-II

Check “BRAKE SW2” indication in “DATA MONITOR” mode. 

 Without CONSULT-II

Check voltage between ECM terminal 101 and ground under the fol-
lowing conditions.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

3. 

CHECK ASCD BRAKE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD clutch switch harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between ASCD clutch switch terminal 1 and
ground under the following conditions with CONSULT-II or
tester.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 4.

CONDITION

INDICATION

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

SEC013D

CONDITION

VOLTAGE

Brake pedal: Fully released

Approximately 0V

Brake pedal: Slightly depressed

Battery voltage

MBIB0060E

PBIB1282E

CONDITION

VOLTAGE

Brake pedal: Fully released

Battery voltage

Brake pedal: Slightly depressed

Approximately 0V

PBIB0799E

ASCD BRAKE SWITCH

EC-643

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4. 

CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5. 

DETECT MALFUNCTIONING PART

Check the following.

●

Fuse block (J/B) connector E101

●

10A fuse

●

Harness for open or short between ASCD brake switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

6. 

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check harness continuity between ASCD brake switch terminal 2 and ASCD clutch switch terminal 1.
Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

7. 

CHECK ASCD BRAKE SWITCH

Refer to 

EC-646, "Component Inspection"

  

OK or NG

OK

>> GO TO 16.

NG

>> Replace ASCD brake switch.

PBIB1282E

Voltage: Battery voltage

PBIB0857E

Continuity should exist.

EC-644

ASCD BRAKE SWITCH

8. 

CHECK ASCD CLUTCH SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ASCD clutch switch terminal 2 and ECM terminal 108.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 9.

9. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E10, F1

●

Harness for open or short between ECM and ASCD clutch switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

10. 

CHECK ASCD CLUTCH SWITCH

Refer to 

EC-646, "Component Inspection"

 .

OK or NG

OK

>> GO TO 16.

NG

>> Replace ASCD clutch switch.

11. 

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check voltage between stop lamp switch terminal 3 and ground
with CONSULT-II or tester.

OK or NG

OK

>> GO TO 13.

NG

>> GO TO 12.

Continuity should exist.

PBIB1282E

Voltage: Battery voltage

PBIB2102E