Infiniti FX35, FX50 (S51). Manual - part 1786

RAS WARNING LAMP

STC-85

< DTC/CIRCUIT DIAGNOSIS >

[WITH REAR ACTIVE STEER]

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RAS WARNING LAMP

Description

INFOID:0000000005549742

• RAS warning lamp turns ON when ignition switch turns ON from OFF. Then, RAS warning lamp turns OFF

after the engine is started.

• The check of RAS system is performed.
• RAS system stops (error) when RAS warning lamp turns ON.

Component Function Check

INFOID:0000000005549743

1.

CHECK RAS WARNING LAMP FUNCTION 

1.

Turn ignition switch ON.

2.

Make sure that RAS warning lamp lights up.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

STC-85, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005549744

1.

PERFORM UNIFIED METER AND A/C AMP. SELF-DIAGNOSIS 

With CONSULT-III

 Perform “METER/M&A” self-diagnosis.

Is any error system detected?

YES

>> Check the error system.

NO

>> GO TO 2.

2.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

Perform “4WAS(MAIN)/RAS/HICAS” self-diagnosis.

Is DTC “U1000” or “U1010” detected?

YES

>> Check the error system.

NO

>> GO TO 3.

3.

PERFORM COMBINATION METER CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the unified meter and A/C amp. harness connector.

3.

Disconnect the combination meter harness connector.

4.

Check the continuity between the unified meter and A/C amp. harness connector and the combination
meter harness connector terminal.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the harnesses and connectors.

4.

CHECK RAS WARNING LAMP SIGNAL

With CONSULT-III

1.

Connect the unified meter and A/C amp. harness connector.

2.

Connect the combination meter harness connector.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

Unified meter and A/C amp.

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

M66

7

M53

3

Existed

27

2

STC-86

< DTC/CIRCUIT DIAGNOSIS >

[WITH REAR ACTIVE STEER]

RAS WARNING LAMP

4.

Select “DATA MONITOR” of “4WAS(MAIN)/RAS/HICAS”.

5.

Check “WARNING LAMP” item on DATA MONITOR of RAS control unit.

Does the item on “DATA MONITOR” indicate “On”?

YES

>> GO TO 5.

NO

>> Replace RAS control unit. Refer to 

STC-109, "Removal and Installation"

.

5.

CHECK COMBINATION METER

Perform the trouble diagnosis of the combination meter. Refer to 

MWI-58, "COMBINATION METER : Diagno-

sis Procedure"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the combination meter. Refer to 

MWI-146, "Exploded View"

.

Special Repair Requirement

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BEFORE REPLACING RAS CONTROL UNIT

• Record the self-diagnosis results (history).

CAUTION:

• Never erase the memory (history) of self-diagnosis results when replacing RAS control unit after

diagnosis.

• Erase the memory of the self-diagnosis results (record) after printing out or recording all the val-

ues of “DATA MONITOR”.

STOP LAMP SWITCH

STC-87

< DTC/CIRCUIT DIAGNOSIS >

[WITH REAR ACTIVE STEER]

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STOP LAMP SWITCH

Description

INFOID:0000000005549746

The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the RAS control unit. 

Component Function Check

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1.

CHECK STOP LAMP SWITCH OPERATION

Operate the brake pedal. Then check that the stop lamp in the rear combination lamp turns ON/OFF correctly.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to diagnosis procedure. Refer to 

STC-87, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005549748

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Disconnect RAS control unit harness connector.

3.

Disconnect stop lamp switch harness connector.

4.

Check terminal for deformation, disconnection, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace or repair damaged parts.

2.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to 

STC-87, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace stop lamp switch.

3.

CHECK STOP LAMP SWITCH CIRCUIT

1.

Turn the ignition switch OFF.

2.

Check the voltage between RAS control unit harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair or replace damaged parts.

Component Inspection

INFOID:0000000005549749

1.

CHECK STOP LAMP SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp switch connector.

3.

Check the continuity between stop lamp switch connector terminals.

Condition

Stop lamp illumination status

When the brake pedal is operation

ON

When the brake pedal is not operation.

OFF

RAS control unit

—

Condition

Voltage

Connector

Terminal

B37

22

Ground

Brake pedal is depressed

Battery voltage

Brake pedal is released

Approx. 0 V

STC-88

< DTC/CIRCUIT DIAGNOSIS >

[WITH REAR ACTIVE STEER]

STOP LAMP SWITCH

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace stop lamp switch. Refer to 

BR-18, "Exploded View"

.

Special Repair Requirement

INFOID:0000000005549750

BEFORE REPLACING RAS CONTROL UNIT

• Record the self-diagnosis results (history).

CAUTION:

• Never erase the memory (history) of self-diagnosis results when replacing RAS control unit after

diagnosis.

• Erase the memory of the self-diagnosis results (record) after printing out or recording all the val-

ues of “DATA MONITOR”.

Stop lamp switch

Condition

Continuity

Terminal

1 

−

 2

Release stop lamp switch
(When brake pedal is depressed.)

Existed

Push stop lamp switch
(When brake pedal is released.)

Not existed