ground INFINITI M35 2006 Factory Service Manual

SRS-28
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
3. Touch “TROUBLE DIAG RECORD”.
NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previously
erased by a reset operation can be displayed.
4. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
5. Touch “PRINT”.
6. Compare diagnostic codes to SRS-28, "
CONSULT-II Diagnostic
Code Chart (“SELF-DIAG [PAST]” or “TROUBLE DIAG
RECORD”)" .
7. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears.
8. Turn ignition switch OFF, then turn off and disconnect CON-
SULT-II, and both battery cables.
9. Repair the system as outlined by the “Repair order” in “Intermit-
tent Malfunction Diagnostic Code Chart”, that corresponds to the
self-diagnosis result. For replacement procedure of component parts, refer to the Removal and Installa-
tion procedure for the appropriate component.
10. Go to SRS-25, "
DIAGNOSTIC PROCEDURE 3" , for final checking.
CONSULT-II Diagnostic Code Chart (“SELF-DIAG [PAST]” or “TROUBLE DIAG RECORD”)
SRS697
SHIA0182E
Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”
NO DTC IS
DETECTED.When malfunction is
indicated by the “AIR
BAG” warning lamp in
User mode.
Low battery voltage (Less than 9V)Go to SRS-25, "DIAGNOSTIC PRO-
CEDURE 3" .
No malfunction is detected.Go to SRS-25, "DIAGNOSTIC PRO-
CEDURE 3" .
DRIVER AIRBAG
MODULE
[OPEN]
Driver air bag module circuit is open (including the spiral cable). 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace driver air bag module, diag-
nosis sensor unit and spiral cable. DRIVER AIRBAG
MODULE
[VB-SHORT]
Driver air bag module circuit is shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG
MODULE
[GND-SHORT]
Driver air bag module circuit is shorted to ground (including the
spiral cable).
DRIVER AIRBAG
MODULE
[SHORT]
Driver air bag module circuit is shorted between lines.
ASSIST A/B MODULE
[OPEN]
Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and front passenger air bag module. ASSIST A/B MODULE
[VB-SHORT]
Front passenger air bag module circuit is shorted to a power
supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
Front passenger air bag module circuit is shorted between lines.

TROUBLE DIAGNOSIS
SRS-29
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SRS
Revision: 2006 January2006 M35/M45
CRASH ZONE SEN
[UNIT FAIL]
CRASH ZONE SEN
[COMM FAIL]Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace crash zone sensor and diag-
nosis sensor unit.
SIDE MODULE LH
[OPEN]
Front LH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and LH side air bag module. SIDE MODULE LH
[VB-SHORT]
Front LH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE LH
[GND-SHORT]
Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
Front LH side air bag module circuit is shorted between lines.
SIDE MODULE RH
[OPEN]
Front RH side air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and RH side air bag module. SIDE MODULE RH
[VB-SHORT]
Front RH side air bag module circuit is shorted to a power sup-
ply circuit.
SIDE MODULE RH
[GND-SHORT]
Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
Front RH side air bag module circuit is shorted between lines.
SATELLITE SENS LH
[UNIT FAIL]
SATELLITE SENS LH
[COMM FAIL]
LH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and LH side air bag (Satellite) sen-
sor.
SATELLITE SENS RH
[UNIT FAIL]
SATELLITE SENS RH
[COMM FAIL]
RH side air bag (Satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and RH side air bag (Satellite) sen-
sor.
PRE-TEN FRONT LH
[OPEN]
Front LH pre-tensioner circuit is open.
1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and front LH seat belt. PRE-TEN FRONT LH
[VB-SHORT]
Front LH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT LH
[GND-SHORT]
Front LH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT LH
[SHORT]
Front LH pre-tensioner circuit is shorted between lines. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SRS-30
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
PRE-TEN FRONT RH
[OPEN]Front RH pre-tensioner circuit is open.
1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and front RH seat belt. PRE-TEN FRONT RH
[VB-SHORT]
Front RH pre-tensioner circuit is shorted to a power supply cir-
cuit.
PRE-TEN FRONT RH
[GND-SHORT]
Front RH pre-tensioner circuit is shorted to ground.
PRE-TEN FRONT RH
[SHORT]
Front RH pre-tensioner circuit is shorted between lines.
CURTAIN MODULE LH
[OPEN]
LH side curtain air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and LH side curtain air bag module. CURTAIN MODULE LH
[VB-SHORT]
LH side curtain air bag module circuit is shorted to a power sup-
ply circuits.
CURTAIN MODULE LH
[GND-SHORT]
LH side curtain air bag module circuit is shorted to ground.
CURTAIN MODULE LH
[SHORT]
LH side curtain air bag module circuit is shorted between lines.
CURTAIN MODULE RH
[OPEN]
RH side curtain air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. If the harness check result is OK,
replace the diagnosis sensor unit
and RH side curtain air bag module. CURTAIN MODULE RH
[VB-SHORT]
RH side curtain air bag module circuit is shorted to a power sup-
ply circuit.
CURTAIN MODULE RH
[GND-SHORT]
RH side curtain air bag module circuit is shorted to ground.
CURTAIN MODULE RH
[SHORT]
RH side curtain air bag module circuit is shorted between lines.
CONTROL UNIT
Diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the diagnosis sensor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
Occupant classification system control unit is malfunctioning. 1. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
OCCUPANT SENS C/U
[COMM FAIL]
Communication between the occupant classification system
control unit and air bag diagnosis sensor unit is interrupted,
diagnosis sensor unit is malfunction, or occupant classification
system control unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
4. Replace the diagnosis sensor unit.
5. Replace the related harness.
OCCUPANT SENS
[UNIT FAIL]
Occupant classification sensor is malfunctioning.Replace front passenger seat cush-
ion/occupant classification system
control unit assembly.
BELT TENSION SENS
[UNIT FAIL]
Belt tension sensor circuit between belt tension sensor and
occupant classification system control unit, or diagnosis sensor
unit is malfunctioning.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front seat belt (passenger
side) assembly.
4. Replace front passenger seat cush-
ion/occupant classification system
control unit assembly. Diagnostic item ExplanationRepair order
“Recheck SRS at each replacement”

SIDE CURTAIN AIR BAG MODULE
SRS-43
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SRS
Revision: 2006 January2006 M35/M45
SIDE CURTAIN AIR BAG MODULEPFP:985P0
Removal and InstallationNHS0009F
REMOVAL
CAUTION:
Before servicing, turn ignition switch OFF, disconnect both battery terminal and wait at least 3
minutes.
Do not use air tools or electric tools for servicing.
Always work from the side of air bag module. Do not work from the front of it.
Leave the curtain air bag module with air bag deployment side facing upward.
Do not make an impact to the air bag module by dropping etc. Replace the air bag module if it has
been dropped or sustained an impact.
1. Remove the curtain air bag module.
Remove the headlining. Refer to EI-52, "HEADLINING" .
Remove the side curtain air bag module connector.
NOTE:
For installing / removing side curtain air bag module con-
nector, insert thin screwdriver wrapped in tape into notch,
lift lock and remove connector.
Install connector with lock raised, and push lock into con-
nector.
After installing the connector, make sure that the lock is
pushed securely into it.
Remove the curtain air bag module fixing bolts, then remove the ground bolt.
PHIA1115E
1. Side curtain air bag module A Ground bolt
PHIA0953J
Fixing bolt ( )
: 10.8 Nꞏm (1.1 kgm, 8 ftlb)
Ground bolt A
: 10.8 Nꞏm (1.1 kg
m, 8 ftlb)

SRS-48
DIAGNOSIS SENSOR UNIT
Revision: 2006 January2006 M35/M45
DIAGNOSIS SENSOR UNITPFP:28556
Removal and InstallationNHS0009J
REMOVAL
CAUTION:
Before servicing, turn ignition switch OFF, disconnect both battery terminal and wait at least 3
minutes.
Before disconnecting the air bag sensor unit harness connector, be sure to disconnect the each
harness connector of the air bag module and pre-tensioner seatbelt to prevent air bag deployment
by static electricity and pre-tensioner seatbelt operation.
Do not use air tools or electric tools for servicing.
Do not use old fixing bolts after removal; replace with new bolts.
Do not make an impact to the diagnosis sensor unit by dropping etc. Replace the diagnosis sen-
sor unit if it has been dropped or sustained an impact.
Replace the diagnosis sensor unit of deployed SRS air bag and deployed SRS front seat belt pre-
tensioner.
1. Remove the diagnosis sensor unit.
Disconnect each connector of all air bag modules and pre-tensioner seat belts.
Remove the center console assembly. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
Disconnect diagnosis sensor unit harness connector.
Remove hex bolts and ground bolt, then remove the diagno-
sis sensor unit.
INSTALLATION
Install in the reverse order of removal.
CAUTION:
Be careful not to damage the diagnosis sensor harness.
After the work is completed, make sure no system malfunction is detected by air bag warning
lamp.
In case that malfunction is detected by the air bag warning lamp, reset by the self-diagnosis func-
tion and delete the memory by CONSULT
ll.
In case that malfunction is still detected after the above operation, perform self-diagnosis to repair
malfunctions. Refer to SRS-19, "
SRS Operation Check" .
ECU DISCRIMINATED NO.
After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is correct for the
vehicle as equipped.Hex bolts
: 24.5 Nꞏm (2.5 kg
m, 18 ftlb)
Ground bolt A
: 6.9 Nꞏm (0.7kg
m, 61 inlb)
PHIA0869J
Specification ECU DISCRIMINATED No.
2WD
AW DModels with driver and passenger air bags, seat belt pre-tensioner, side air bags and curtain air
bagsFA 8 E

SRS-52
COLLISION DIAGNOSIS
Revision: 2006 January2006 M35/M45
For Side CollisionNHS0009M
WHEN THE SIDE AIR BAG IS ACTIVATED IN THE SIDE COLLISION:
1. Replace the following components:
–All parts of front seatback (including front seatback frame) with front side air bag module (on the side on
which front side air bag is activated)
–Curtain air bag module (on the side on which side curtain air bag is activated)
–Diagnosis sensor unit
–Satellite sensor (on the side on which side air bag and side curtain air bag is activated)
2. Check the SRS components and the related parts using the following table.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
3. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-19, "
SRS Operation
Check" . Ensure entire SRS operates properly.
WHEN SRS IS NOT ACTIVATED IN THE SIDE COLLISION:
1. Check the SRS components and the related parts using the following table.
–Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
2. Conduct self-diagnosis using CONSULT-II or “AIR BAG” warning lamp. Refer to SRS-19, "
SRS Operation
Check" . Ensure entire SRS operates properly.
SRS INSPECTION (FOR SIDE COLLISION)
PartFront side air bag and
side curtain air bag is
activatedFront side air bag and side curtain air bag is NOT activated
LH or RH side curtain
air bag moduleREPLACE the side
curtain air bag mod-
ule.
(Repair the center pil-
lar inner, etc. before
installing new one if
damaged.)1. Check for visible signs of damage (dents, tears, deformation) of the center pillar on
the collision side.
2. If damaged— Remove the LH or RH side curtain air bag module.
3. Check for visible signs of damaged (tears etc.) of the LH or RH side curtain air bag
module.
4. Check harness and connectors for damage, and terminals for deformities.
5. If no damage is found, reinstall the LH or RH side curtain air bag module with new
bolts.
6. If damaged—REPLACE the LH or RH side curtain air bag module with new bolts.
Front LH or RH side
air bag moduleREPLACE all parts of
seatback with
deployed front side
air bag module.1. Check for visible signs of damage (dents, tears, deformation) of the seatback on
the collision side.
2. Check harness and connectors for damage, and terminals for deformities.
3. If damaged—REPLACE the front seatback assembly.
LH or RH side air bag
(Satellite) sensorREPLACE the side
air bag (Satellite) sen-
sor on the collision
side with new nuts.
(Repair the center pil-
lar inner, etc. before
installing new one if
damaged.)1. Remove the LH or RH side air bag (Satellite) sensor on the collision side. Check
harness connectors for damage, terminals for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the LH or RH
side air bag (Satellite) sensor.
3. Install the LH or RH side air bag (Satellite) sensor to check fit.
4. If no damage is found, reinstall the LH or RH side sir bag (Satellite) sensor with
new nuts.
5. If damaged—REPLACE the LH or RH side air bag (Satellite) sensor with new nuts.
Diagnosis sensor unit REPLACE the diag-
nosis sensor unit with
the new bolts.1. Check case and bracket for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall the diagnosis sensor unit with new bolts and ground
bolt.
4. If damaged—REPLACE the diagnosis sensor unit with new bolts and ground bolt.

STC-1
STEERING CONTROL SYSTEM
G STEERING
CONTENTS
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SECTION STC
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STC
Revision: 2006 January2006 M35/M45
STEERING CONTROL SYSTEM
EPS
SYSTEM DESCRIPTION ............................................ 3
Components ............................................................. 3
Components (Models with Rear Active Steer) ......... 3
Electronically Controlled Power Steering System
Function ................................................................... 3
Fail-Safe Function .................................................... 4
FAIL-SAFE INPUT/CANCEL CONDITIONS ......... 4
TROUBLE DIAGNOSIS .............................................. 5
How to Perform Trouble Diagnosis .......................... 5
BASIC CONCEPT ................................................. 5
Component Parts Location ....................................... 5
Wiring Diagram — EPS — ....................................... 6
Control Unit Input/Output Signal Standard ............... 8
STANDARD BY CIRCUIT TESTER AND OSCIL-
LOSCOPE ........................................................
..... 8
For Fast and Accurate Trouble Diagnosis ................ 9
Basic Inspection ....................................................... 9
POWER SUPPLY CIRCUIT TERMINAL LOOSE-
NESS AND BATTERY .......................................... 9
Inspection: Power Steering Control Unit Power Sup-
ply Circuit and Ground ............................................. 9
Symptom: The Steering Force Does Not Change
Smoothly According to the Vehicle Speed ............. 10
RAS
REAR ACTIVE STEER ............................................. 13
Removal and Installation ........................................ 13
COMPONENTS .................................................. 13
REMOVAL ........................................................
... 13
INSTALLATION ................................................... 13
Disassembly and Assembly ................................... 14
COMPONENTS .................................................. 14
DISASSEMBLY ................................................... 14
INSPECTION AFTER DISASSEMBLY ............... 14
ASSEMBLY ......................................................... 14
Neutral Position Adjustment ................................... 14
SYSTEM DESCRIPTION .......................................... 16
Components ........................................................... 16RAS (Rear Active Steer) Function .......................... 16
Fail-Safe Function .................................................. 17
TROUBLE DIAGNOSIS ............................................ 18
How to Perform Trouble Diagnosis ......................... 18
BASIC CONCEPT ............................................... 18
Component Parts Location ..................................... 19
Schematic ............................................................... 20
Wiring Diagram — RAS — ..................................... 21
Control Unit Input/Output Signal Standard ............. 26
CIRCUIT TESTER REFERENCE VALUE ........... 26
STANDARD BY CONSULT-II .............................. 27
CONSULT-II Function (RAS) .................................. 28
FUNCTION .......................................................
... 28
CONSULT-II SETTING PROCEDURE ................ 28
SELF-DIAG RESULT MODE ............................... 28
DATA MONITOR MODE ...................................... 30
ACTIVE TEST MODE ......................................... 30
RAS CONTROL UNIT PART NUMBER .............. 30
Diagnosis Procedure with Self-Diagnosis Function
(Without CONSULT-II) ............................................ 31
DESCRIPTION .................................................... 31
SELF-DIAGNOSIS PROCEDURE ...................... 31
SELF-DIAGNOSIS DISPLAY .............................. 31
SELF-DIAGNOSIS DISPLAY ITEMS .................. 31
HOW TO ERASE SELF-DIAGNOSIS ................. 31
CAN Communication .............................................. 31
SYSTEM DESCRIPTION .................................... 31
For Fast and Accurate Trouble Diagnosis .............. 32
Basic Inspection ..................................................... 32
BASIC INSPECTION 1: POWER SUPPLY CIR-
CUIT TERMINAL LOOSENESS AND BATTERY ... 32
BASIC INSPECTION 2: RAS WARNING LAMP
INSPECTION ...................................................... 32
BASIC INSPECTION 3: RAS CONTROL UNIT
POWER SUPPLY CIRCUIT AND GROUND CIR-
CUIT INSPECTION ............................................. 32
Trouble Diagnosis Chart ......................................... 33
SELF-DIAGNOSIS .............................................. 33
DIAGNOSIS CHART BY SYMPTOM .................. 34
Inspection 1: RAS Control Unit Malfunction ........... 35

STC-8
[EPS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Control Unit Input/Output Signal StandardNGS000E0
STANDARD BY CIRCUIT TESTER AND OSCILLOSCOPE
CAUTION:
When checked using a circuit tester for voltage measurement, connector terminals should not be
forcefully extended.
Te r m i n a l
Measuring
pointMeasuring condition Standard
+ (wire color) –
1 (GR)
GroundIGN Ignition switch ON. Battery voltage (Approx. 12 V)
2 (B) Ground — —
3 (L)Vehicle speed
signal
(2-pulse)At 40 km/h (25MPH)
5 (Y)Engine
speed signalAt idle after warming up
At approx. 2,000 rpm
7 (G)Power steer-
ing solenoid
valveNormal
(Vehicle speed)0 km/h (0 MPH) Approx. 4.4 - 6.6 V
100 km/h (62 MPH) Approx. 2.4 - 3.6 V
In fail-safe mode
(Engine speed)0 - 1,500 rpm Approx. 4.4 - 6.6 V
1,500 - 3,000 rpm Approx. 3.5 V
More than 3,000 rpm Approx. 2.1 V
ELF1080D
PBIA3654J
PBIA3655J

TROUBLE DIAGNOSIS
STC-9
[EPS]
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Revision: 2006 January2006 M35/M45
For Fast and Accurate Trouble DiagnosisNGS000E1
Check the following items with the vehicle stopped
Is air pressure and size of tires proper?
Is the specified part used for the steering wheel?
Is control unit a genuine part?
Are there any fluid leakage from steering gear assembly, power steering oil pump, and hydraulic pipes,
etc? Refer to PS-8, "
POWER STEERING FLUID" .
Is the fluid level proper? Refer to PS-8, "POWER STEERING FLUID" .
Is the wheel alignment adjusted properly? Refer to FSU-19, "SERVICE DATA AND SPECIFICATIONS
(SDS)" (2WD), FSU-36, "SERVICE DATA AND SPECIFICATIONS (SDS)" (AWD).
Are there any damage or modification to suspension or body resulting in increased weight or altered
ground clearance?
Check each link installation condition of suspension and axle.
Check each connector connection condition.
Check the following items while driving the vehicle
Check conditions when the malfunction occurred (5W 1H).
Is the engine condition normal?
Basic InspectionNGS000E2
POWER SUPPLY CIRCUIT TERMINAL LOOSENESS AND BATTERY
Check battery terminals for looseness on both positive and negative ones and ground connection. Also make
sure that battery voltage does not drop.
Inspection: Power Steering Control Unit Power Supply Circuit and GroundNGS000E3
1. CHECK POWER STEERING CONTROL UNIT CONNECTOR
Turn ignition switch OFF, disconnect power steering control unit harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 2.
NG >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. CHECK POWER STEERING CONTROL UNIT GROUND CIRCUIT
Disconnect power steering control unit harness connector M8, and
then check continuity between power steering control unit harness
connector M8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Ground circuit open or shorted. Repair or replace any
inoperative parts. Terminal 2 – Ground : Continuity exist.
SGIA1231E

STC-10
[EPS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
3. CHECK POWER STEERING CONTROL UNIT POWER SUPPLY CIRCUIT
Turn ignition switch ON, and then check voltage between power
steering control unit harness connector M8 and ground.
OK or NG
OK >> Power supply and ground circuit are normal.
NG >> Power supply circuit open or shorted. Repair or replace
any inoperative parts.
Symptom: The Steering Force Does Not Change Smoothly According to the
Vehicle Speed
NGS000E4
Heavy steering force with the static steering/light steering force during high-speed driving
1. POWER STEERING SOLENOID VALVE SIGNAL INSPECTION 1
1. Start engine.
2. Change the vehicle speed from 0 to 100 km/h (0 to 62 MPH)
slowly, and then check voltage between power steering control
unit harness connector M8 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 7.
2. POWER STEERING SOLENOID VALVE SIGNAL INSPECTION 2
1. Activate fail-safe function by running the engine speed at 1,500 rpm or higher for 10 seconds with the
vehicle stopped.
2. Change the engine speed to the idling, to approximately 1,600
rpm, and to approximately 3,000 rpm slowly, and then check
voltage between power steering control unit harness connector
M8 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 8.
3. CHECK POWER STEERING SOLENOID VALVE CONNECTOR
Turn ignition switch OFF, disconnect power steering solenoid valve harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 4.
NG >> Harness or connector open or shorted. Repair or replace any inoperative parts. Terminal 1 – ground : Battery voltage (Approx. 12 V)
SGIA1232E
Terminal 7 – ground : The voltage has changed from
approximately 4.4 - 6.6 V to
approximately 2.4 - 3.6 V
SGIA1233E
Terminal 7 – ground : The voltage has changed from
approximately 5.5 V to approxi-
mately 2.1 V step-by-step.
SGIA1233E