INFINITI FX35 2008 Service Manual

DTC P2A00, P2A03 A/F SENSOR 1EC-541
< SERVICE INFORMATION > [VQ35DE]
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3. Disconnect mass air flow sensor harness connector.
4. Restart engine and let it idle for at least 5 seconds.
5. Stop engine and reconnect mass air flow sensor harness con-
nector.
6. Make sure DTC P0102 is displayed.
7. Erase the DTC memory. Refer to EC-55, "
Emission-Related
Diagnostic Information".
8. Make sure DTC P0000 is displayed.
>> GO TO 14.
14.CONFIRM A/F ADJUSTMENT DATA
1. Turn ignition switch OFF and then ON.
2. Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT-III.
3. Make sure that “0.000” is displayed on CONSULT-III screen.
>>INSPECTION END
Removal and InstallationINFOID:0000000001326425
AIR FUEL RATIO (A/F) SENSOR 1
Refer to EM-26.
PBIB1565E
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EC-542
< SERVICE INFORMATION >[VQ35DE]
ASCD BRAKE SWITCH
ASCD BRAKE SWITCH
Component DescriptionINFOID:0000000001326426
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-37
for the ASCD function.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326427
Specification data are reference values.
PBIB1089E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW 1
(ASCD brake switch)  Ignition switch: ON Brake pedal: Fully released ON
 Brake pedal: Slightly depressed OFF
BRAKE SW 2
(Stop lamp switch)  Ignition switch: ON Brake pedal: Fully released OFF
 Brake pedal: Slightly depressed ON
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ASCD BRAKE SWITCHEC-543
< SERVICE INFORMATION > [VQ35DE]
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Wiring DiagramINFOID:0000000001326428
Specification data are reference values
and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
TBWM1411E
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EC-544
< SERVICE INFORMATION >[VQ35DE]
ASCD BRAKE SWITCH
Diagnosis Procedure
INFOID:0000000001326429
1.CHECK OVERALL FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DAT A MONITOR” mode with CONSULT-III.
3. Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 108 and ground under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
TER- MI-
NAL
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 ASCD brake switch [Ignition switch: ON]
 Brake pedal: Slightly depressed
Approximately 0V
[Ignition switch: ON]
 Brake pedal: Fully released BATTERY VOLTAGE
(11 - 14V)
CONDITION INDICATION
Brake pedal: Slightly depressed OFF
Brake pedal: Fully released ON
CONDITION VOLTAGE
Brake pedal: Slightly depressed Approximately 0V
Brake pedal: Fully released Battery voltage
MBIB0061E
PBIB1605E
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ASCD BRAKE SWITCHEC-545
< SERVICE INFORMATION > [VQ35DE]
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4. Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
 Fuse block (J/B) connector E201
 10A fuse
 Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground or short power in harness or connectors.
4.CHECK ASCD BRAKE SWITCH INPUT SIGN AL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM term inal 108 and ASCD brake switch terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E211, M41
 Harness for open or short between ECM and ASCD brake switch
>> Repair open circuit or short to ground or short power in harness or connectors.
6.CHECK ASCD BRAKE SWITCH
Refer to EC-545, "
Component Inspection"
OK or NG
OK >> GO TO 7.
NG >> Replace ASCD brake switch.
7.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
>> INSPECTION END
Component InspectionINFOID:0000000001326430
ASCD BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector. Voltage: Battery voltage
PBIB0857E
Continuity should exist.
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EC-546
< SERVICE INFORMATION >[VQ35DE]
ASCD BRAKE SWITCH
3. Check continuity between ASCD brake switch terminals 1 and 2
under the following conditions.
If NG, adjust ASCD brake switch installation, refer to BR-5
, and
perform step 3 again.
Condition Continuity
Brake pedal: Fully released Should exist.
Brake pedal: Slightly depressed Should not exist.
SEC023D
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ASCD INDICATOREC-547
< SERVICE INFORMATION > [VQ35DE]
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ASCD INDICATOR
Component DescriptionINFOID:0000000001326431
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE, SET,
and is integrated in combination meter.
CRUISE indicator illuminates when MAIN switch on ASCD
steering switch is turned ON to indicated that
ASCD system is ready for operation.
SET indicator illuminates when following conditions are met.
 CRUISE indicator is illuminated.
 SET/COAST switch on ASCD steering switch is tur ned ON while vehicle speed is within the range of ASCD
setting.
SET indicator remains lit during ASCD control.
Refer to EC-37
for the ASCD function.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000001326432
Specification data are reference value.
MONITOR ITEM CONDITION SPECIFICATION
CRUISE LAMP  Ignition switch: ON  ON/OFF (MAIN) switch: Pressed
at the 1st time → at the 2nd time ON
→ OFF
SET LAMP  MAIN switch: ON
 When vehicle speed is be-
tween 40km/h (25MPH) and
144km/h (89MPH) ASCD: Operating ON
ASCD: Not operating OFF
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EC-548
< SERVICE INFORMATION >[VQ35DE]
ASCD INDICATOR
Wiring Diagram
INFOID:0000000001326433
Diagnosis ProcedureINFOID:0000000001326434
1.CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
TBWM1412E
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ASCD INDICATOREC-549
< SERVICE INFORMATION > [VQ35DE]
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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 diagnoses for DTC U1000, U1001. Refer to EC-146
.
3.CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-27, "
CONSULT-III Function (METER/M&A)".
OK or NG
OK >> GO TO 4.
NG >> Go to DI-30, "
DTC [B2202] Meter Communication Circuit".
4.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
>> INSPECTION END
ASCD INDICATOR CONDITION SPECIFICATION
CRUISE LAMP  Ignition switch: ON  MAIN switch: pressed at the 1st
time → at the 2nd time ON
→ OFF
SET LAMP  MAIN switch: ON
 When vehicle speed is be-
tween 40km/h (25MPH) and
144km/h (89MPH) ASCD: Operating ON
ASCD: Not operating OFF
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EC-550
< SERVICE INFORMATION >[VQ35DE]
ELECTRICAL LOAD SIGNAL
ELECTRICAL LOAD SIGNAL
DescriptionINFOID:0000000001326435
The electrical load signal (Headlamp switch signal, et
c.) is transferred through the CAN communication line
from BCM to ECM via IPDM E/R.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326436
Specification data are reference values.
Diagnosis ProcedureINFOID:0000000001326437
1.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-III 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 4.
2.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3.CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Check “HEATER FAN SW” in “DATA MONITOR” m ode with CONSULT-III under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
4.CHECK REAR WINDOW DEFOGGER SYSTEM
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL  Ignition switch: ON Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF. OFF
HEATER FAN SW  Engine: After warming up, idle the
engine Heater fan: Operating. ON
Heater fan: Not operating OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
Condition Indication
Lighting switch: ON at 2nd position ON Lighting switch: OFF OFF
Condition Indication
Heater fan: Operating ON
Heater fan: Not operating OFF
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