SYMPTOM DIAGNOSIS
COMBINATION SWITCH SYSTEM SYMPTOMS
Symptom Table


Wiring diagram
PrecautionsControl unit
Removal and Installation
A/C AND AV SWITCH ASSEMBLY
Removal and Installation
The A/C and AV switch assembly is located in cluster lid C.
Refer to AV-481, "Removal and Installation" (BOSE W/COLOR
DISPLAY).
Refer to AV-652, "Removal and Installation" (BOSE W/COLOR DISPL ...
P1801 vias control solenoid valve 2
Description
The VIAS control solenoid valve 2 cuts the intake manifold vacuum signal for
power valve 2 control. It
responds to ON/OFF signals from the ECM. When the solenoid is OFF, the vacuum
signal from the intake
manifold is cut. When the ECM sends an ON signal the coil pulls the plunger ...
Power supply and ground circuit
Diagnosis Procedure
1.CHECK GROUND CONNECTION-I
Turn ignition switch OFF.
Check ground connection E9. Refer to Ground Inspection
2.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
Disconnect ECM harness connector.
Check the continuity between ECM harness connector and ground.
Also che ...