Quest V6-3.5L (VQ35DE) (2009)
OK or NG
OK >> GO TO 3.
NG >> Repair the ECM branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to See: Diagrams/Electrical Diagrams/Power Supply And Ground Circuit.
OK or NG
OK >>.
-
Present error: Replace the ECM. Refer to See: Testing and Inspection/Programming and Relearning/Procedure After Replacing ECM.
-
Past error: Error was detected in the ECM branch line.
NG >> Repair the power supply and the ground circuit.
Front Air Control Branch Line Circuit
TROUBLE DIAGNOSIS
Front Air Control Branch Line Circuit
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the front air control for damage, bend and loose connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of front air control.
2. Check the resistance between the front air control harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the front air control branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the front air control. Refer to the following.
-
Models with automatic air conditioner: See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/ATC/Power Supply And Ground Circuit For Front Air Control
-
Models with manual air conditioner: See: Heating and Air Conditioning/Testing and Inspection/Component Tests and General
Diagnostics/MTC/Power Supply And Ground Circuit For Front Air Control
OK or NG
OK >>
-
Present error: Replace the front air control. Refer to the following.
-
Models with automatic air conditioner: See: Heating and Air Conditioning/Control Assembly/Service and Repair
-
Models with manual air conditioner: See: Heating and Air Conditioning/Control Module HVAC/Service and Repair
-
Past error: Error was detected in the front air control branch line.
NG >> Repair the power supply and the ground circuit.
IPDM E/R Branch Line Circuit
TROUBLE DIAGNOSIS
IPDM E/R Branch Line Circuit