2008 INFINITI FX35 air condition

EC-1058
< SERVICE INFORMATION >[VK45DE]
DTC P1564 ASCD STEERING SWITCH
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK ASCD STEERING SWITCH
Refer to EC-1058, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace ASCD steering switch.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
Component InspectionINFOID:0000000001326931
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M203.
2. Check continuity between combination switch terminals 14 and
15 with pushing each switch.
If NG, replace ASCD steering switch.
Switch Condition Resistance [ Ω]
MAIN switch Pressed Approx. 0
Released Approx. 4,000
CANCEL switch Pressed Approx. 250
Released Approx. 4,000
RESUME/ACCELERATE
switch Pressed Approx. 1,480
Released Approx. 4,000
SET/COAST switch Pressed Approx. 660
Released Approx. 4,000
PBIB0967E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-1064
< SERVICE INFORMATION >[VK45DE]
DTC P1572 ICC BRAKE SWITCH
Check voltage between ECM terminal 101 and ground under the fol-
lowing conditions.
OK or NG
OK >> GO TO 17.
NG >> GO TO 12.
3.CHECK DTC WITH ICC UNIT
Refer to ACS-35
.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace.
4.CHECK ICC BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Turn ignition switch ON.
4. Check voltage between ICC brake hold relay terminal 3 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 5.
5.CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch harness connector.
3. Turn ignition switch ON.
CONDITION VOLTAGE
When brake pedal: Fully released Approximately 0V
When brake pedal: Slightly depressed Battery voltage
PBIB1537E
PBIB1531E
Voltage: Battery voltage
PBIB1538E
PBIB2558E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-1072
< SERVICE INFORMATION >[VK45DE]
DTC P1572 ASCD BRAKE SWITCH
OK or NG
OK >> GO TO 13.
NG >> GO TO 8.
3.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between ASCD brake switch terminal 1 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.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 to power in harness or connectors.
5.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 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 7.
NG >> GO TO 6.
CONDITION VOLTAGE
When brake pedal: Fully released Approximately 0V
When brake pedal: Slightly depressed Battery voltage
PBIB1537E
PBIB2558E
Voltage: Battery voltage
PBIB0857E
Continuity should exist.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-1074
< SERVICE INFORMATION >[VK45DE]
DTC P1572 ASCD BRAKE SWITCH
NG >> GO TO 11.
11 .DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E211, M41
 Harness for open or short between ECM and stop lamp switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
12.CHECK STOP LAMP SWITCH
Refer to EC-1074, "
Component Inspection"
OK or NG
OK >> GO TO 13.
NG >> Replace stop lamp switch.
13.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
Component InspectionINFOID:0000000001326948
ASCD BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check harness continuity between ASCD brake switch terminals
1 and 2 under the following conditions.
4. If NG, adjust ASCD brake switch installation, refer to BR-5
, and
perform step 3 again.
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1 and 2 under the following conditions.
4. If NG, adjust stop lamp 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
PBIB1536E
Condition Continuity
Brake pedal: Fully released Should not exist
Brake pedal: Slightly depressed Should exist
PBIB1535E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-1082
< SERVICE INFORMATION >[VK45DE]
DTC P1800 VIAS CONT
ROL SOLENOID VALVE
Diagnosis Procedure
INFOID:0000000001326966
1.CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect VIAS control sol enoid valve (1) harness connector.
- Vacuum tank (2)
3. Turn ignition switch ON.
4. Check voltage between VIAS control solenoid valve terminal 1 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
 Harness connectors E211, M41
 Harness connectors M82, F102
 Harness for open or short between VIAS control solenoid valve and IPDM E/R
>> Repair harness or connectors.
3.CHECK VIAS CONTROL SOLENOID VALVE OUTP UT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 29 and VIAS control solenoid valve terminal 2. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
TER- MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
29 GY VIAS control solenoid valve [Engine is running]
 Selector lever: P or N
0 - 1.0V
[Engine is running]
 Selector lever: D
 Engine speed: Below 5,000 rpm BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
 Engine speed: Above 5,000 rpm 0 - 1.0V
PBIB3236E
Voltage: Battery voltage
PBIB0173E
Continuity should exist.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DTC P1800 VIAS CONTROL SOLENOID VALVEEC-1083
< SERVICE INFORMATION > [VK45DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK VIAS CONTROL SOLENOID VALVE
Refer to EC-1083, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace VIAS control solenoid valve.
5.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
Component InspectionINFOID:0000000001326967
VIAS CONTROL SOLENOID VALVE
With CONSULT-III
1. Reconnect harness connectors disconnected.
2. Turn ignition switch ON.
3. Perform “VIAS SOL VALVE” in “ACTIVE TEST” mode.
4. Check air passage continuity and operation delay time under the following conditions.
Operation takes less than 1 second.
5. If NG, replace VIAS control solenoid valve.
Without CONSULT-III
1. Disconnect VIAS control solenoid valve.
2. Check air passage continuity and operation delay time under the following conditions.
Operation takes less than 1 second.
3. If NG, replace VIAS control solenoid valve.
Removal and InstallationINFOID:0000000001326968
VIAS CONTROL SOLENOID VALVE
Refer to EM-175.
Condition
VIAS SOL VALVE Air passage continuity
between A and B Air passage continuity
between A and C
ON Yes No
OFF No Yes
JMBIA0180ZZ
Condition Air passage continuity
between A and B Air passage continuity
between A and C
12V direct current supply
between terminals 1 and 2 Ye s N o
No supply No Yes
MEC488B
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EC-1086
< SERVICE INFORMATION >[VK45DE]
DTC P1805 BRAKE SWITCH
Diagnosis Procedure
INFOID:0000000001326974
1.CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK STOP LAMP SWIT CH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
2. Check voltage between stop lamp 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.
 10A fuse
 Fuse block (J/B) connector E201
 Harness for open and short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
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)
Brake pedal Stop lamp
Fully released Not illuminated
Slightly depressed Illuminated
PBIB2558E
Voltage: Battery voltage
PBIB1184E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

DTC P1805 BRAKE SWITCHEC-1087
< SERVICE INFORMATION > [VK45DE]
C
D
E
F
G H
I
J
K L
M A
EC
NP
O
1. Disconnect ECM harness connector.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between ECM terminal 101 and stop lamp 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 stop lamp switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK STOP LAMP SWITCH
Refer to EC-1087, "
Component Inspection".
OK or NG
OK >> GO TO 7.
NG >> Replace stop lamp switch.
7.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
Component InspectionINFOID:0000000001326975
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-5
, and perform step 3 again.
Continuity should exist.
Conditions Continuity
Brake pedal: Fully released Should not exist
Brake pedal: Slightly depressed Should exist
PBIB1185E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C