INFINITI FX35 2004 Service Manual

EC-1310
[VK45DE]
ASCD INDICATOR
Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CFJ
TBWM0267E

ASCD INDICATOR
EC-1311
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureABS00CFK
1. CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
OK or NG
OK >> GO TO 3.
NG >> Perform trouble diagnosis for DTC U1000, U1001. Refer to EC-792, "
DTC U1000, U1001 CAN
COMMUNICATION LINE" .
3. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-32, "
SELF-DIAGNOSTIC RESULTS" .
OK or NG
OK >> GO TO 4.
NG >> Go to DI-22, "
Communication Line Inspection" .
4. CHECK INTERMITTENT INCIDENT
Refer to EC-784, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
ASCD INDICATOR CONDITION SPECIFICATION
CRUISE LAMP

Ignition switch: ON

ON/OFF (MAIN) switch:
Pressed at the 1st time →
at the 2nd timeON → OFF
SET LAMP

ON/OFF (MAIN) switch: ON

When vehicle speed is
between 40 km/h (25 MPH)
and 144 km/h (89 MPH)

ASCD is operating ON

ASCD is not operating OFF

EC-1312
[VK45DE]
SNOW MODE SWITCH
Revision: 2004 November 2004 FX35/FX45
SNOW MODE SWITCHPFP:25130
DescriptionABS00CFL
NOTE:
If DTC U1000 or U1001 are displayed, first perform the trouble diagnosis for DTC U1000, U1001.
Refer to EC-792, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
The snow mode switch signal is sent to the “unified meter and A/C amp.” from the snow mode switch. The
“unified meter and A/C amp.” then sends the signal to the ECM by CAN communication line.
The snow mode is used for driving or starting the vehicle on snowy roads or slippery areas. If the snow mode
is activated, the vehicle speed will not be accelerated immediately than your original pedal in due to avoid the
vehicle slip. In other words, ECM controls the rapid engine torque change by controlling the electric throttle
control actuator operating speed.
CONSULT-II Reference Value in the Data Monitor ModeABS00CFM
MONITOR ITEM CONDITION SPECIFICATION
SNOW MODE SW

Ignition switch: ONSnow mode switch: ON ON
Snow mode switch: OFF OFF

SNOW MODE SWITCH
EC-1313
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Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CFN
TBWH0217E

EC-1314
[VK45DE]
SNOW MODE SWITCH
Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureABS00CFO
1. CHECK SNOW MODE SWITICH OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Select “SNOW MODE SW” in “DATA MONITOR” mode with
CONSULT-II.
3. Check “SNOW MODE SW” indication under the following condi-
tions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK SNOW MODE SWITICH OVERALL FUNCTION-II
1. Start engine.
2. Check the snow mode indicator in the snow mode switch under the following condition.
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-791, "
Ground Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace ground connections.
CONDITION INDICATION
Snow mode switch: ON ON
Snow mode switch: OFF OFF
PBIB2009E
CONDITION INDICATION
Snow mode switch: ON ON
Snow mode switch: OFF OFF
PBIB2195E

SNOW MODE SWITCH
EC-1315
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
4. CHECK POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect “unified meter and A/C amp.” harness connector.
3. Turn ignition switch ON.
4. Check voltage between “unified meter and A/C amp.” terminal
12 and ground under the following conditions with CONSULT-II
or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 5.
5. CHECK POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect snow mode switch.
3. Turn ignition switch ON.
4. Check voltage between snow mode switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

10A fuse

Harness for open or short between snow mode switch and fuse.
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK SNOW MODE SWITCH OUT PUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between snow mode switch terminal 3 and “unified meter and A/C amp.” termi-
nal 12. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
CONDITION VOLTAGE
Snow mode switch: ON Battery voltage
Snow mode switch: OFF 0V
PBIB2010E
Voltage: Battery voltage.
PBIB2011E
Continuity should exist.

EC-1316
[VK45DE]
SNOW MODE SWITCH
Revision: 2004 November 2004 FX35/FX45
8. CHECK SNOW MODE INDICATOR LAMP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect snow mode switch harness connector.
3. Check harness continuity between snow mode switch terminal 5 and “unified meter and A/C amp.” termi-
nal 12. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK SNOW MODE INDICATOR LAMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between snow mode switch terminal 6 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to power in harness or connectors.
10. CHECK SNOW MODE INDICATOR LAMP
Check harness continuity between snow mode switch terminals 5 and 6 under the following conditions.
OK or NG
OK >> GO TO 11.
NG >> Replace snow mode switch.
11 . CHECK SNOW MODE SWITCH
Refer to EC-1317, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace snow mode switch.Continuity should exist.
Continuity should exist.
Condition Continuity
1 Should exist.
2 Should not exist.
PBIB2082E

SNOW MODE SWITCH
EC-1317
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Revision: 2004 November 2004 FX35/FX45
12. CHECK “UNIFIED METER AND A/C AMP.”
Refer to DI-28, "
UNIFIED METER AND A/C AMP" .
OK or NG
OK >> GO TO 13.
NG >> Replace “unified meter and A/C amp.”.
13. CHECK INTERMITTENT INCIDENT
Refer to EC-784, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionABS00CFP
SNOW MODE SWITCH
1. Check snow mode switch continuity between terminals 1 and 3
under the following condition.
2. If NG, replace snow mode switch.
CONDITION CONTINUITY
Snow mode switch is ON Should exist
Snow mode switch is OFF Should not exist
PBIB2012E

EC-1318
[VK45DE]
MIL AND DATA LINK CONNECTOR
Revision: 2004 November 2004 FX35/FX45
MIL AND DATA LINK CONNECTORPFP:24814
Wiring DiagramABS00CFQ
TBWM0268E

MIL AND DATA LINK CONNECTOR
EC-1319
[VK45DE]
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Revision: 2004 November 2004 FX35/FX45
TBWM0269E