Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti Q45 FY33 F50 2001-2006 Approved 2005_Q45 scs
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SUSPENSION CONTROL SYSTEM
E SUSPENSION
A
SUSPENSION CONTROL SYSTEM
SECTION SCS B
C
D
SCS
CONTENTS
ADS ACTIVE TEST PROCEDURE ............................ 23 . F
Self-Diagnosis ....................................................... 25
.
TROUBLE DIAGNOSIS FOR SYMPTOMS ............... 2 . FUNCTION ......................................................... 25
.
Inspection 5: Hard or Soft Feel ............................... 2 . SELF-DIAGNOSTICS PROCEDURE ................. 25 . G
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC HOW TO READ SELF-DIAGNOSTIC RESULTS 25 ...
ITEMS ........................................................................ 4
. MALFUNCTION CODE/SYMPTOM CHART ...... 26 .
Inspection 1: Vehicle Speed Sensor ....................... 4 . HOW TO ERASE SELF-DIAGNOSTIC
Inspection 2: Steering Angle Sensor ....................... 4 . H
RESULTS ........................................................... 26
.
Inspection 3: Stop Lamp Switch .............................. 5 .
Inspection 4: Vertical G sensor ............................... 6 .
TROUBLE DIAGNOSIS FOR ACTIVE DAMPER
EPS
I
SUSPENSION ............................................................ 8. ELECTRICALLY CONTROLLED POWER STEER-
Precautions ............................................................. 8
. ING SYSTEM ........................................................... 27
.
PRELIMINARY CHECK ....................................... 8 . Precautions ............................................................ 27
. J
Fail-Safe .................................................................. 8
. BEFORE DIAGNOSING THE POWER STEER-
FAIL-SAFE FUNCTIONS ..................................... 8 . ING SYSTEM, ENSURE THAT .......................... 27 .
FAIL-SAFE ITEMS ............................................... 8 . Description ............................................................. 27
.
Active Damper Suspension Configuration .............. 9 . K
SYSTEM DESCRIPTION ................................... 27 .
SYSTEM COMPONENTS .................................... 9 . FAIL-SAFE FUNCTION ...................................... 27 .
SCHEMATIC ...................................................... 10 . HYDRAULIC CIRCUIT ....................................... 28 .
CONTROL UNIT INPUT/OUTPUT SIGNAL Component Parts Location .................................... 28 . L
STANDARD ........................................................ 20 . Trouble Diagnosis .................................................. 29
.
CONSULT-II Inspection Procedure ....................... 21 . PRECAUTIONS FOR DIAGNOSIS .................... 29 .
SELF-DIAGNOSIS PROCEDURE ..................... 21 . INSPECTION BEFORE TROUBLE DIAGNOSIS 29 ... M
DATA MONITOR PROCEDURE ........................ 22 . DIAGNOSIS PROCEDURE ............................... 29 .
DATA MONITOR MODE .................................... 22 . Control Unit Inspection Table ................................. 32 .
Edition; 2004 May SCS-1 2005 Q45
TROUBLE DIAGNOSIS FOR SYMPTOMS
[ADS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
[ADS] PFP:00007
Inspection 5: Hard or Soft Feel EES000EW
1. SELF-DIAGNOSTICS INSPECTION
q Disconnect control unit connector and shock absorber actuator connector, then re-connect them.
q Perform self-diagnosis to check that proper test results are obtained.
Inspection results OK?
OK >> GO TO 2.
NG >> Check and repair detected area.
2. CHECK SHOCK ABSORBER ACTUATOR OPERATION
q Set the diagnostic system in the self-diagnosis mode.
q Depress parking brake pedal.
q Set select switch to "AUTO", then move vehicle body up and down to check that dampening force of each
shock absorber is high. Brake pedal should be released during tests.
q Set select lever to "SPORT", then move vehicle body up and down to check that dampening force of each
shock absorber is high.
Inspection results OK?
OK >> GO TO 11.
NG >> GO TO 3.
3. CHECK SHOCK ABSORBER ACTUATOR
q Measure resistance between shock absorber actuator terminals.
Front
1,2,4,5 - 3 : Approx. 12
Rear
1,3,4,5 - 2 : Approx. 12
Inspection results OK?
OK >> GO TO 4.
NG >> Replace actuator.
SEIA0284E
4. CHECK CONTROL UNIT OUTPUT SIGNAL
q Measure voltage between control unit connector terminals 42 (L/
R), 48 (B/R) and body ground.
42 (L/R),48 (B/R) - Body ground : Battery voltage
Inspection results OK?
OK >> GO TO 6.
NG >> GO TO 5.
SEIA0285E
5. CHECK HARNESS CONNECTOR
q Check continuity between control unit and shock absorber actuator terminals.
Inspection results OK?
OK >> Replace control unit
NG >> Replace harness connector.
Edition; 2004 May SCS-2 2005 Q45
TROUBLE DIAGNOSIS FOR SYMPTOMS
[ADS]
6. CHECK SHOCK ABSORBER ACTUATOR OPERATION A
q Remove actuator from strut.
q Set diagnostic system in the self-diagnostic mode.
q Check that actuator operates as shown in the figure when select B
switch is set to "AUTO" or "SPORT", and brake pedal is
depressed or released.
Inspection results OK? C
OK >> GO TO 8.
NG >> GO TO 7.
D
SEIA0093E
7. CHECK HARNESS CONNECTOR SCS
q Check continuity between control unit and shock absorber actuator terminals.
Inspection results OK?
F
OK >> Replace control unit.
NG >> Repair or replace harness or connector.
8. CHECK SHOCK ABSORBER CONTROL ROD G
q Pinch control rod with your fingers, then turn it 2 or 3 rotations to check that it rotates smoothly without
free play. H
Inspection results OK?
OK >> GO TO 9.
NG >> Replace shock absorber. I
9. SELF-DIAGNOSTICS1
q Install actuator and perform self-diagnosis. J
q Turn ignition switch to "ON" to initialize actuator positioning, then re-perform self-diagnosis to check actu-
ator operation.
Inspection results OK? K
OK >> INSPECTION END.
NG >> GO TO 10.
L
10. SELF-DIAGNOSTICS 2
q Replace with a new actuator, then perform self-diagnosis.
M
q Turn ignition switch to "ON" to initialize actuator positioning, then re-perform self-diagnosis to check actu-
ator operation.
Inspection results OK?
OK >> Replace actuator
NG >> Replace shock absorber.
11. CHECK RIDE COMFORT
q Check for improved riding comfort.
Inspection results OK?
OK >> INSPECTION END.
NG >> Replace shock absorber.
Edition; 2004 May SCS-3 2005 Q45
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
[ADS]
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS PFP:00000
Inspection 1: Vehicle Speed Sensor EES000ES
1. CHECK INPUT SIGNAL
q Check control unit input signal.
Refer to EC-116, "ECM Terminals and Reference Value" .
Inspection results OK?
OK >> GO TO 2.
NG >> Replace control unit.
2. CHECK COMBINATION METER
q Does combination meter operate properly?
Inspection results OK?
OK >> Repair or replace speed sensor or vehicle speed sensor-to-control unit harness.
NG >> Repair or replace combination meter circuit.
Inspection 2: Steering Angle Sensor EES000ET
1. CHECK CONTROL UNIT INPUT SIGNAL
q Slowly turn the steering wheel at least 90◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo