2006 INFINITI QX56 Factory Service Manual

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Page 3217 of 3383

INFINITI QX56 2006 Factory Service Manual TF-112
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
VDC Operation Signal (ABS)EDS002IO
DIAGNOSTIC PROCEDURE
1. CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT
Perform self-diagnosis wit

Page 3218 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMTF-113
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Revision: November 2009 2006 QX56
CAN Communication LineEDS002IQ
DIAGNOSTIC PROCEDURE
1. CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-II

Page 3219 of 3383

INFINITI QX56 2006 Factory Service Manual TF-114
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE
1. CHECK ATP SWITCH SIGNAL
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR ” mode for “ALL M

Page 3220 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMTF-115
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Revision: November 2009 2006 QX56
3. CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect

Page 3221 of 3383

INFINITI QX56 2006 Factory Service Manual TF-116
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
4. Push and release ATP switch and check continuity between ATP
switch terminals 8 and 9.
5. If NG, replace the ATP switch. Refer

Page 3222 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSTF-117
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Revision: November 2009 2006 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
4WD Shift Indicator Lamp and 4LO Indicator Lamp Do Not Turn ONE

TROUBLE DIAGNOSIS FOR SYMPTOMSTF-117
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Revision: November 2009 2006 QX56
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
4WD Shift Indicator Lamp and 4LO Indicator Lamp Do Not Turn ONEDS002HM
SYMPTOM:
4WD shift indicator lamp and 4LO indicator lamp do not turn ON for approx. 1 second when turning
ignition switch to “ON”.
DIAGNOSTIC PROCEDURE
1. CHECK TRANSFER CONTROL UNIT POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect transfer control unit harness connector.
3. Check voltage between transfer control unit harness connector terminals and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between transfer control unit harness connector terminals and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following. If any items are damaged, repair or replace damaged parts.
10A fuses No. 26 located in fuse and fusible link box and No. 59 located in the fuse and relay
box. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
20A fuse No. 53 located in the IPDM E/R. Refer to PG-4, "POWER SUPPLY ROUTING CIR-
CUIT" .
Harness for short or open between battery and transfer control unit harness connector termi-
nals 47.
Harness for short or open between battery and transfer control unit harness connector terminal
29.
Harness for short or open between battery and transfer shut off relay harness connector E69
terminal 1, and 3.
Harness for short or open between transfer shut off relay harness connector E69 terminal 2
and transfer control unit harness connector terminal 30.
Harness for short or open between transfer shut off relay harness connector E69 terminal 5
and transfer control unit harness connector terminals 16 and 22.
Battery and ignition switch. Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
Transfer shut off relay. Refer to TF-57, "COMPONENT INSPECTION" .
ConnectorTerminal Voltage (Approx.)
E142 16 - Ground
0V
22 - Ground
E143 29 - Ground
30 - Ground
Battery voltage
47 - Ground
WDIA0165E
Connector Terminal Voltage (Approx.)
E142 16 - Ground
Battery voltage
22 - Ground
E143 29 - Ground
30 - Ground
0V
47 - Ground Battery voltage
WDIA0166E

Page 3223 of 3383

INFINITI QX56 2006 Factory Service Manual TF-118
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: November 20092006 QX56
2. CHECK TRANSFER CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch “ OFF”. (Stay for at least 5 seconds.)
2. Disconnect tr

Page 3224 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYMPTOMSTF-119
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4. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”

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