2005 INFINITI FX35 ABS

EC-1368
[VK45DE]
REFRIGERANT PRESSURE SENSOR
Revision: 2005 July 2005 FX
7. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 70 and refrigerant pressure sensor terminal 2. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E17, F47

Harness for open or short between ECM and refrigerant pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace refrigerant pressure sensor.
NG >> Repair or replace.
Removal and InstallationABS007XA
REFRIGERANT PRESSURE SENSOR
Refer to ATC-156, "Removal and Installation of Refrigerant Pressure Sensor" .
Continuity should exist.

ELECTRICAL LOAD SIGNAL EC-1369
[VK45DE]
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Revision: 2005 July 2005 FX
ELECTRICAL LOAD SIGNALPFP:25350
DescriptionABS007XB
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor ModeABS007XC
Specification data are reference values.
Diagnostic ProcedureABS007XD
1. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-II and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 4.
3. CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to GW-86, "
REAR WINDOW DEFOGGER" .
>> INSPECTION END
4. CHECK HEADLAMP SYSTEM
Refer to LT- 7 , "
HEADLAMP - XENON TYPE -" .
>> INSPECTION END
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL

Ignition switch: ON Rear window defogger switch: ON
and/or
Lighting switch: 2ND position ON
Rear window defogger switch and light-
ing switch: OFF OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
PBIB0103E
Condition Indication
Lighting switch: ON at 2nd position ON
Lighting switch: OFF OFF
PBIB0103E

EC-1370
[VK45DE]
ICC BRAKE SWITCH
Revision: 2005 July 2005 FX
ICC BRAKE SWITCHPFP:25320
Component DescriptionABS00DCI
When depress on the brake pedal, ICC brake switch is turned OFF
and stop lamp switch is turned ON. ECM detects the state of the
brake pedal by this input of two kinds (ON/OFF signal)
Refer to ACS-6, "
DESCRIPTION" for the ICC function.
CONSULT-II Reference Value in Data Monitor ModeABS00DCJ
Specification data are reference values.
PBIB2558E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ICC brake switch)

Ignition switch: ON Brake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(stop lamp switch)

Ignition switch: ON Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON

ICC BRAKE SWITCH EC-1371
[VK45DE]
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Revision: 2005 July 2005 FX
Wiring DiagramABS00DCK
TBWM0425E

EC-1372
[VK45DE]
ICC BRAKE SWITCH
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureABS00DCL
1. CHECK OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CON- SULT-II.
3. Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 and ground under the following conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
TER-
MINAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
101 P/L Stop lamp switch [Ignition switch: OFF]

Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]

Brake pedal: Slightly depressed BATTERY VOLTAGE
(11 - 14V)
108 SB ICC brake switch [Ignition switch: ON]

Brake pedal: Slightly depressed
Approximately 0V
[Ignition switch: ON]

Brake pedal: Fully released BATTERY VOLTAGE
(11 - 14V)
CONDITION INDICATION
When brake pedal: Slightly depress OFF
When brake pedal: Fully released ON
SEC011D
CONDITION VOLTAGE
When brake pedal: Slightly depress Approximately 0V
When brake pedal: Fully released Battery voltage
MBIB0061E

ICC BRAKE SWITCH EC-1377
[VK45DE]
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Revision: 2005 July 2005 FX
16. CHECK STOP LAMP SWITCH
Refer to EC-1377, "
Component Inspection"
OK or NG
OK >> GO TO 17.
NG >> Replace stop lamp switch.
17. CHECK INTERMITTENT INCIDENT
Refer to EC-854, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionABS00DCM
ICC BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch harness connector.
3. Check continuity between ICC brake switch terminals 1 and 2 under the following conditions.
4. If NG, adjust ICC brake switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 3 again.
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between stop lamp switch terminals 1 and 2 under the following conditions.
4. If NG, adjust stop lamp switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 3 again.
ICC BRAKE HOLD RELAY
1. Apply 12V direct current between ICC brake hold relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 4, 6 and 7 under the following conditions.
3. If NG, replace ICC brake hold relay.
Condition Continuity
When brake pedal: Fully released. Should exist.
When brake pedal: Slightly depressed. Should not exist.
PBIB1536E
Condition Continuity
When brake pedal: Fully released. Should not exist.
When brake pedal: Slightly depressed. Should exist.
PBIB1535E
Condition Between terminals Continuity
12V direct current supply
between terminals 1 and 2 3 and 4 Should not exist
6 and 7 Should exist
No current supply 3 and 4 Should exist
6 and 7 Should not exist
MBIB0063E

EC-1378
[VK45DE]
ASCD BRAKE SWITCH
Revision: 2005 July 2005 FX
ASCD BRAKE SWITCHPFP:25320
Component DescriptionABS007XJ
When the brake pedal is depressed, ASCD brake switch is turned
OFF and stop lamp switch is turned ON. ECM detects the state of
the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-727, "
AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeABS007XK
Specification data are reference values.
PBIB2558E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ASCD brake switch)

Ignition switch: ON Brake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(stop lamp switch)

Ignition switch: ON Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON

ASCD BRAKE SWITCH EC-1379
[VK45DE]
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Revision: 2005 July 2005 FX
Wiring DiagramABS007XL
TBWM0426E