Infiniti Q45. Manual - part 810

 

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Infiniti Q45. Manual - part 810

 

 

TROUBLE DIAGNOSIS FOR SYMPTOMS

SCS-57

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5. 

CHECK SHOCK ABSORBER ACTUATOR OPERATION

1.

Remove actuator from strut.

2.

Set diagnostic system in the self-diagnostic mode.

3.

Check that actuator operates as shown in the figure when select
switch is set to “AUTO” or “SPORT”, and brake pedal is
depressed or released.

OK or NG

OK

>> GO TO 6.

NG

>> Replace shock absorber.

6. 

CHECK SHOCK ABSORBER CONTROL ROD

Pinch control rod with your fingers, then turn it 2 or 3 rotations to check that it rotates smoothly without free
play.

OK or NG

OK

>> GO TO 7.

NG

>> Replace shock absorber.

7. 

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 8.

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.

8. 

CHECK SYMPTOM

Check again.

OK or NG

OK

>> GO TO 9.

NG

>> Replace active damper suspension control unit. Refer to 

SCS-60, "Removal and Installation"

 .

9. 

CHECK RIDE COMFORT

Check for improved riding comfort.

OK or NG

OK

>> INSPECTION END

NG

>> Replace shock absorber.

SEIA0093E

SCS-58

TROUBLE DIAGNOSIS FOR SYMPTOMS

Active Damper Suspension Select Switch Does Not Change

NES000CI

SYMPTOM:

Active damper suspension select switch do not change when switching active damper suspension
select switch.

DIAGNOSTIC PROCEDURE

1. 

CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT POWER SUPPLY CIRCUIT

Perform trouble diagnosis for active damper suspension control unit power supply system. Refer to 

SCS-30,

"Power Supply Circuit"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace damaged parts.

2. 

CHECK SYSTEM FOR ACTIVE DAMPER SUSPENSION SELECT SWITCH

Perform trouble diagnosis for active damper suspension select switch system. Refer to 

SCS-49, "Active

Damper Suspension Select Switch"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace damaged parts.

3. 

CHECK INDICATOR LAMP CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Connect combination meter harness connector.

3.

Disconnect active damper suspension control unit harness connector.

4.

Turn ignition switch “ON”. (Do not start engine.)

5.

Ground the following terminal using suitable wiring.

Active damper suspension control unit (A) harness connector
B37 terminal 16 and ground.

Does SPORT indicator lamp turn on?

OK

>> GO TO 4.

NG

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

replace damaged parts.

10A fuses [No. 9 located in the fuse block (J/B) No.1].
Refer to 

PG-2, "POWER SUPPLY ROUTING"

 .

Harness for short or open between ignition switch and
combination meter harness connector M43 terminal
59.

Harness for short or open between active damper suspension control unit harness connector
B37 terminals 16 and combination meter harness connector M43 terminals 53.

Ignition switch. Refer to 

PG-2, "POWER SUPPLY ROUTING"

 .

Replace combination meter. Refer to 

DI-23, "Removal and Installation for Combination Meter"

 .

4. 

CHECK ACTIVE TEST

Check active test of SPORT indicator lamp. Refer to 

SCS-26, "SPORT Indicator lamp"

 .

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 3.

SEIA0727E

TROUBLE DIAGNOSIS FOR SYMPTOMS

SCS-59

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SCS

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

>> GO TO 6.

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.

6. 

CHECK SYMPTOM

Check again.

OK or NG

OK

>> INSPECTION END

NG

>> Replace active damper suspension control unit. Refer to 

SCS-60, "Removal and Installation"

 .

SCS-60

CONTROL UNIT

CONTROL UNIT

PFP:28400

Removal and Installation

NES000AX

REMOVAL

1.

Turn the ignition switch OFF and disconnect the battery cable from the negative terminal.

2.

Remove the trunk side finisher. Refer to 

EI-60, "Removal and Installation"

 .

3.

Disconnect the two active damper suspension control unit con-
nectors.

4.

Remove the active damper suspension control unit bolts.

5.

Remove the active damper suspension control unit (1).

INSTALLATION

Note the following, and installation is the reverse order of removal.

When installing the active damper suspension control unit, tighten bolts to the specified torque.

SGIA1423E

Active damper suspension control unit bolts

: 8.3 N·m (0.85 kg-m, 73 in-lb)

 

 

 

 

 

 

 

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