2008 INFINITI FX35 power supply

GW-68
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
CONSULT-III Function (IPDM E/R)
INFOID:0000000001328007
DATA MONITOR
ACTIVE TEST
Work FlowINFOID:0000000001328008
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to GW-60, "
System Description".
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to GW-68,
"Trouble Diagnosis Symptom Chart".
4. Does rear window defogger operate no rmally? YES: GO TO 5, NO: GO TO 3.
5. INSPECTION END.
Trouble Diagnosis Symptom ChartINFOID:0000000001328009
Make sure other systems us ing the signal of the following systems operate normally.
Test item Content
REAR DEFOGGER Gives a drive sign al to the rear window defogger rela y to activate it.
IPDM E/R diagnostic test
item Check item diagnostic
test mode Content
REAR DEFOGGER Data monitor Displays the input data of BCM in real time.
Active test Gives a drive signal to a load to check the operation.
Monitored Item Description
RR DEF REQ Indicates [ON/OFF] condition of rear window defogger function by IPDM E/R.
Test Item Description
REAR DEFOGGER This test is able to check rear window defogger operation. Rear window defogger operates when “ON”
on CONSULT-III screen is touched.
Symptom Diagnoses / Service procedure Refer to page
Rear window defogger and door mirror defogger do not op-
erate. 1. Check BCM power supply and ground circuit
GW-69
2. Check IPDM E/R auto active test PG-20
3. Check rear window defogger switch circuit GW-69
4. Check rear window defogger power supply circuit GW-70
5. Replace IPDM E/ R PG-24
Rear window defogger does not operate but both of door
mirror defogger operate. 1. Check rear window defogger circuit
GW-72
2. Check filament GW-77
Door mirror defogger does not operated but both of rear
window defogger operate. Check door mirror defogger power supply circuit
GW-73
Driver side door mirror defogger does not operate. Check driver side door mirror defogger circuit GW-75
Passenger side door mirror defogger does not operate. Check passenger side door mirror defogger circuit GW-75
Rear window defogger switch does not light, and rear win-
dow defogger is not displayed on the display.
But rear window defogger operates. Check rear window defogger signal
GW-76
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REAR WINDOW DEFOGGERGW-69
< SERVICE INFORMATION >
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Check BCM Power Supply and Ground CircuitINFOID:0000000001328010
First perform the “SELF-DIAG RESULTS” in “BCM” with CONSULT-III, when perform the each trouble
diagnosis. Refer to BCS-13, "
U1000 CAN Communication Circuit".
1.CHECK FUSE
 Check 15A fuse [No.1, located in the fuse block (J/B)]
 Check 15A fuse [No.22, located in the fuse block (J/B)]
 Check 50A fusible link (letter M located in the fuse and fusible link box).
NOTE:
Refer to GW-60, "
Component Parts and Harness Connector Location".
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown out, be sure to eliminate c ause of malfunction before installing new fuse. Refer to
PG-3
.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between BCM connector M3, M4 terminal 38, 42, 55 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check BCM power supply circuit for open or short.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector M4 terminal 49, 52 and ground.
OK or NG
OK >> Power supply and ground circuit are OK.
NG >> Check BCM ground circuit for open or short.
Check Rear Window Defogger Switch CircuitINFOID:0000000001328011
1.CHECK REAR WINDOW DEF OGGER SWITCH OPERATION
With CONSULT-III
Check (“REAR DEF SW”, “IGN ON SW”) in DATA MONITOR mode with CONSULT-III.
Without CONSULT-III1. Turn ignition switch ON. 38 (W/L) – Ground : Battery voltage
42 (L/R) – Ground : Battery voltage
55 (G) – Ground : Battery voltage
PIIA6160E
49 (B) – Ground : Continuity should exist.
52 (B) – Ground : Continuity should exist.
PIIA6161E
When rear window defogger switch is turned to ON
REAR DEF SW : ON
When ignition switch is turned to ON
IGN ON SW : ON
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GW-70
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
2. Check voltage between BCM connector ground.
OK or NG
OK >> Rear window defogger switch is OK.
NG >> GO TO 2.
2.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and A/C and AV switch connector.
3. Check continuity between BCM connector M3 terminal 9 and A/ C and AV switch connector M64 terminal 16.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK BCM OUTPUT SIGNAL
1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M3 terminal 9 and ground.
OK or NG
OK >> Replace A/C and AV switch.
NG >> Replace BCM.
Check rear Window Defogger Power Supply CircuitINFOID:0000000001328012
1.CHECK FUSE
 Check 10A fuse [No.12, located in the fuse block (J/B)]
 Check 20A fuse (No.75, located in the IPDM E/R)
 Check 20A fuse (No.80, located in the IPDM E/R)
NOTE:
Refer to GW-60, "
Component Parts and Harness Connector Location".
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown out, be sure to eliminate cause of malfunction before installing new fuse, refer to PG-3
.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
Connector Terminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
M3 9 (L/W) Ground Rear window defogger
switch is pressed.
0
Rear window defogger
switch is OFF. 5
PIIA6208E
9 (L/W) – 16 (L/W) : Cont
inuity should exist.
PIIA6209E
9 (L/W) – Ground : Approx. 5
PIIA6208E
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REAR WINDOW DEFOGGERGW-71
< SERVICE INFORMATION >
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2. Remove rear window defogger relay.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger relay connector E13 terminals 1, 3, 6 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK REAR WINDOW DEFOGGER RELAY
Check continuity between rear wi ndow defogger terminals 3 and 5, 6
and 7.
OK or NG
OK >> GO TO 4.
NG >> Replace rear window defogger relay.
4.CHECK REAR WINDOW DEFOGG ER RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Installation rear window defogger relay.
3. Turn ignition switch ON.
4. Check voltage between IPDM E/R connector and ground.
OK or NG
OK >> Rear window defogger power supply circuit is OK.
NG >> GO TO 5.
5.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and rear window defogger relay. 1 (OR) – Ground : Battery voltage
3 (W) – Ground : Battery voltage
6 (R) – Ground : Battery voltage
PIIA4233E
Terminal Condition Continuity
35 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
67 12V direct current supply
between terminals 1 and 2
Ye s
No current supply No
SEC202B
Connector Terminals (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (-)
E9 52 (G) Ground When rear window defog-
ger switch ON
0
When rear window defog-
ger switch OFF Battery
voltage
PIIA6210E
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GW-72
< SERVICE INFORMATION >
REAR WINDOW DEFOGGER
3. Check continuity between IPDM E/R connector E9 terminal 52and rear window defogger relay connector E13 terminal 2.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness.
6.CHECK REAR WINDOW DEFOGGER RELAY OUTPUT SIGNAL
1. Connect IPDM E/R connector and rear window defogger relay.
2. Turn ignition switch ON.
3. Check voltage between IPDM E/R connector E9 terminal 52 and ground.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace IPDM E/R.
Check Rear Window Defogger CircuitINFOID:0000000001328013
1.CHECK POWER SUPPLY CIRCUIT 1
1. Turn ignition switch OFF.
2. Disconnect rear window defogger connector.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger connector and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF. 52 (G) – 2 (G) : Continuity should exist.
PIIA6211E
52 (G) – Ground : Battery voltage
PIIA6210E
Connector
Terminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D104 1(W) Ground Rear window defogger
switch ON.
Battery voltage
Rear window defogger
switch OFF. 0
PIIA9347E
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REAR WINDOW DEFOGGERGW-73
< SERVICE INFORMATION >
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2. Check continuity between rear window defogger connector D114 terminal 2 and ground.
OK or NG
OK >> Check filament. Refer to GW-77, "Check Filament"
 If filament is OK, check condition of harness and con-
nector.
 If filament is NG, repair filament.
NG >> Repair or replace harness.
3.CHECK REAR WINDOW DEFOGGER RELAY CIRCUIT
1. Turn ignition switch OFF.
2. Remove rear window defogger relay.
3. Check continuity between rear window defogger relay connector E13 terminal 5, 7 and rear window defogger connector D104 ter-
minal 1.
OK or NG
OK >> Check condition of harness and connector.
NG >> Repair or replace harness.
Check Door Mirror Defogger Power Supply CircuitINFOID:0000000001328014
1.CHECK FUSE
 Check 15A fuse [No.8, loca ted in fuse block (J/B)]
NOTE:
Refer to GW-60, "
Component Parts and Harness Connector Location".
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown out, be sure to eliminate c ause of malfunction before installing new fuse. Refer to
PG-3
.
2.CHECK POWER SUPPLY CIRCUIT 1
1. Turn ignition switch ON.
2. Check voltage between fuse block (J/B) connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK POWER SUPPLY CIRCUIT 2 2 (B)
− Ground : Continuity should exist.
PIIA9348E
5 (B) – 1 (W) : Cont inuity should exist.
7 (B) – 1 (W) : Cont inuity should exist.
PIIA9349E
ConnectorTerminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
E201 2C (B) Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
PIIA2388E
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REAR WINDOW DEFOGGERGW-75
< SERVICE INFORMATION >
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Check Driver Side Door Mirror Defogger CircuitINFOID:0000000001328015
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door mirror (driver side) connector.
3. Turn ignition switch ON.
4. Check voltage between door mirror (driver side) connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between door mirror (driver side) connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.
3.CHECK DOOR MIRROR DEFOGGER
1. Connector door mirror connector.
2. Check continuity between each door mirror connector.
OK or NG
OK >> Check condition of harness and connector.
NG >> Replace door mirror (driver side).
Check Passenger Si de Door Mirror Defogger CircuitINFOID:0000000001328016
1.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect door mirror (passenger side) connector.
3. Turn ignition switch ON.
Connector Terminal (Wire color)
ConditionVoltage (V)
(Approx.)
(+) (–)
D2 4 (L) Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
PIIB8572E
Door mirror
connector terminal
GroundContinuity
D2 (driver side)
D32 (passenger side) 3(B) Yes
PIIB8570E
Door mirror
connector terminal Terminal Continuity
D2 (driver side)
D32 (passenger side) 3(B) 4(L) Yes
PIIB8571E
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TROUBLE DIAGNOSISLAN-7
< SERVICE INFORMATION > [CAN FUNDAMENTAL]
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TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000001451948
“U1000” or “U1001” is indicated on SELF-DIAG RESULTS on CONSULT-III if CAN communication signal is
not transmitted or received between units for 2 seconds or more.
CAN COMMUNICATION SYSTEM ERROR
 CAN communication line open (CAN-H, CAN-L, or both)
 CAN communication line short (ground, betw een CAN communication lines, other harnesses)
 Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN “U1000” OR “U1001” IS INDICATED EV EN THOUGH CAN COMMUNICATION SYSTEM IS
NORMAL
 Removal/installation of parts: Error may be detec ted when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be
detected.)
 Fuse blown out (removed): CAN communication of the unit may cease.
 Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition
switch ON (Depending on the control unit which carries out CAN communication).
 Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
 Error may be detected if reprogramming is not completed normally.
NOTE:
CAN communication system is normal if “U1000” or “U 1001” is indicated on SELF-DIAG RESULTS of CON-
SULT-III under the above conditions. Erase the memory of the self-diagnosis of each unit.
Symptom When Error Occurs in CAN Communication SystemINFOID:0000000001451949
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communicati on line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:
 Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
 Refer to LAN-37, "
Abbreviation List" for the unit abbreviation.
Example: TCM branch line open circuit
SKIB8738E
Unit name Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM Reverse warning chime does not sound.
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