Infiniti Q45. Manual - part 808

 

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Infiniti Q45. Manual - part 808

 

 

TROUBLE DIAGNOSIS FOR SYSTEM

SCS-49

C

D

F

G

H

I

J

K

L

M

A

B

SCS

3. 

CHECK HARNESS BETWEEN ECM AND ACTIVE DAMPER SUSPENSION CONTROL UNIT

1.

Turn ignition switch “OFF”.

2.

Disconnect ECM harness connector and active damper suspension control unit harness connector.

3.

Check continuity between ECM harness connector (A) F101 ter-
minal 103 and active damper suspension control unit harness
connector (B) B37 terminal 12.

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

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4. 

CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT

Check active damper suspension control unit input/output signal. Refer to 

SCS-20, "Active Damper Suspen-

sion Control Unit Input/Output Signal Reference Values"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Check active damper suspension control unit pin terminals for damage or loose connection with

harness connector. If any items are damaged, repair or replace damaged parts.

5. 

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG

OK

>> INSPECTION END

NG

>> Perform self-diagnosis with ECM again. Refer to 

EC-118, "SELF-DIAG RESULTS MODE"

 .

Active Damper Suspension Select Switch

NES000CG

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

ACTIVE DAMPER SUSPENSION CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminal.

Continuity should exist.

SEIA0781E

Monitored item

Content

Condition

Display value

SELECT SWITCH 
[AUTO/SPORT]

Input condition from 
active damper suspen-
sion select switch

Active damper suspension 
select switch
(Engine running)

AUTO

AUTO

SPORT

SPORT

Terminal

Wire 

color

Item

Condition

Data (Approx.)

13

P/B

Active damper suspension 
select switch

Engine running

Active damper suspension select switch: 
AUTO

0 V

Active damper suspension select switch: 
SPORT

5 V

SCS-50

TROUBLE DIAGNOSIS FOR SYSTEM

DIAGNOSTIC PROCEDURE

1. 

CHECK ACTIVE DAMPER SUSPENSION SELECT SWITCH SIGNAL

 With CONSULT-II

1.

Start engine.

2.

Select “DATA MONITOR” mode for “ACT D/SUS” with CONSULT-II.

3.

Read out AUTO/SPOR switching action of “SELECT SWITCH”.

 Without CONSULT-II

1.

Turn ignition switch “ON”.

2.

Check voltage between active damper suspension control unit
harness connector (A) terminal and ground.

OK or NG

OK >> GO 

TO 

5.

NG

>> GO TO 2.

2. 

CHECK ACTIVE DAMPER SUSPENSION SELECT SWITCH SUPPLY CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect active damper suspension select switch harness connector.

3.

Turn ignition switch “ON”.

4.

Check voltage between active damper suspension select switch
harness connector (A) terminal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check the following. If any items are damaged, repair or 

replace damaged parts.

Harness for short or open between active damper
suspension control harness connector B37 terminal
13 and active damper suspension select switch harness connector M20 terminal 1.

Monitor item

Condition

Display 

value

SELECT SWITCH

Active damper suspension 
select switch
(Engine running)

AUTO

AUTO

SPORT

SPORT

SEIA0722E

Connector

Terminal

Condition

Voltage 

(Approx.)

B37

 13 - 

Ground

Engine running

Active damper sus-
pension select switch: 
AUTO

0 V

Active damper sus-
pension select switch: 
SPORT

5 V

SEIA0723E

Connector

Terminal

Voltage (Approx.)

M20

 1 - Ground

Battery voltage

SEIA0724E

TROUBLE DIAGNOSIS FOR SYSTEM

SCS-51

C

D

F

G

H

I

J

K

L

M

A

B

SCS

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect active damper suspension select switch harness connector.

3.

Check continuity between active damper suspension select
switch harness connector (A) M20 terminal 2 and ground.

Also check harness for short to power.

OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit or short to power in harness or con-

nectors.

4. 

CHECK ACTIVE DAMPER SUSPENSION SELECT SWITCH

1.

Turn ignition switch “OFF”.

2.

Remove the active damper suspension select switch.

3.

Operate active damper suspension select switch (A) and check
continuity between active damper suspension select switch (A)
terminals.

OK or NG

OK

>> GO TO 5.

NG

>> Replace active damper suspension select switch.

5. 

CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT

Check active damper suspension control unit input/output signal. Refer to 

SCS-20, "Active Damper Suspen-

sion Control Unit Input/Output Signal Reference Values"

 .

OK or NG

OK

>> INSPECTION END

NG

>> Check active damper suspension control unit pin terminals for damage or loose connection with

harness connector. If any items are damaged, repair or replace damaged parts.

Continuity should exist.

SEIA0735E

Terminal

Condition

Continuity

1 - 2

Active damper suspension select switch: AUTO

Yes

Active damper suspension select switch: SPORT

No

SEIA0725E

SCS-52

TROUBLE DIAGNOSIS FOR SYSTEM

Stop Lamp Switch

NES000HG

Check the following if “flickering pattern for 14” is detected in self-diagnosis results without CONSULT-II.

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

ACTIVE DAMPER SUSPENSION CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminal.

DIAGNOSTIC PROCEDURE

1. 

CHECK STOP LAMP SWITCH SIGNAL

 With CONSULT-II

1.

Start engine.

2.

Select “DATA MONITOR” mode for “ACT D/SUS” with CONSULT-II.

3.

Read out AUTO/SPOR switching action of “STOP LAMP SW”.

 Without CONSULT-II

1.

Turn ignition switch “ON”.

2.

Check voltage between active damper suspension control unit
harness connector terminal and ground.

OK or NG

OK >> GO 

TO 

4.

NG

>> GO TO 2.

Monitored item

Content

Condition

Display value

STOP LAMP SW [ON/OFF]

Condition of brake pedal 
operation

Brake pedal: Depressed

ON

Brake pedal: Released

OFF

Terminal

Wire 

color

Item

Condition

Data (Approx.)

11

L/B

Stop lamp switch

Brake pedal: Depressed

Battery voltage

Brake pedal: Released

0 V

Monitor item

Condition

Display value

STOP LAMP SW

Brake pedal: Depressed

ON

Brake pedal: Released

OFF

SEIA0776E

Connector

Terminal

Condition

Voltage 

(Approx.)

M37

 11 - Ground

Brake pedal: Depressed

Battery voltage

Brake pedal: Released

0 V

SEIA0277E

 

 

 

 

 

 

 

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