2008 INFINITI QX56 Factory Service Manual

Page 1705 of 4083

INFINITI QX56 2008  Factory Service Manual EC-406
< COMPONENT DIAGNOSIS >[VK56DE]
ICC BRAKE SWITCH
ICC BRAKE SWITCH
Component DescriptionINFOID:0000000001365887
When depress on the brake pedal, ICC brake switch is turned OFF
and stop lamp swit

Page 1706 of 4083

INFINITI QX56 2008  Factory Service Manual ICC BRAKE SWITCHEC-407
< COMPONENT DIAGNOSIS > [VK56DE]
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Check voltage between ECM terminal 101 and ground under the fol-
lowing conditions.
OK or NG
OK >>
INSPECTION EN

Page 1707 of 4083

INFINITI QX56 2008  Factory Service Manual EC-408
< COMPONENT DIAGNOSIS >[VK56DE]
ICC BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ICC brake switch harness connector.
3. Check harness continuity between ICC brake hold relay terminal

Page 1708 of 4083

INFINITI QX56 2008  Factory Service Manual ICC BRAKE SWITCHEC-409
< COMPONENT DIAGNOSIS > [VK56DE]
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3. Check voltage between stop lamp switch terminal 3 and ground
with CONSULT -IIl or tester.
OK or NG
OK >> GO T

Page 1709 of 4083

INFINITI QX56 2008  Factory Service Manual EC-410
< COMPONENT DIAGNOSIS >[VK56DE]
ICC BRAKE SWITCH
3. Check continuity between ICC brake switch terminals 1 and 2
under the following conditions.
If NG, adjust ICC brake switch installation, refe

Page 1710 of 4083

INFINITI QX56 2008  Factory Service Manual IGNITION SIGNALEC-411
< COMPONENT DIAGNOSIS > [VK56DE]
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IGNITION SIGNAL
Component DescriptionINFOID:0000000001365892
IGNITION COIL & POWER TRANSISTOR
The ignition signal

Page 1711 of 4083

INFINITI QX56 2008  Factory Service Manual EC-412
< COMPONENT DIAGNOSIS >[VK56DE]
IGNITION SIGNAL
OK >>
INSPECTION END
NG >> GO TO 10.
4.CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF, wait at least 10 seconds and then

Page 1712 of 4083

INFINITI QX56 2008  Factory Service Manual IGNITION SIGNALEC-413
< COMPONENT DIAGNOSIS > [VK56DE]
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• Harness for open or short between condenser-1 and IPDM E/R
>> Repair open circuit or short to ground or short