Page 952 of 3051
4 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect power steering oil pressure switch harness connector.
3. Check harness continuity between power steering oil pressure switch harness terminal 2 and engine ground.
Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to power.
OK or NG
OK©GO TO 5.
NG©Repair open circuit or short to power in harness or connectors.
5 CHECK INPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 46 and power steering oil pressure switch harness terminal 1.
Refer to wiring diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 7.
NG©GO TO 6.
6 DETECT MALFUNCTIONING PART
Check the harness for open or short between ECM and power steering oil pressure switch.
©Repair open circuit or short to ground or short to power in harness or connectors.
7 CHECK POWER STEERING OIL PRESSURE SWITCH
Refer to ªComponent Inspectionº, EC-527.
OK or NG
OK©GO TO 8.
NG©Replace power steering oil pressure switch.
8 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-145.
©INSPECTION END
Component InspectionNLEC0455POWER STEERING OIL PRESSURE SWITCHNLEC0455S011. Disconnect power steering oil pressure switch harness con-
nector then start engine.
2. Check continuity between terminals 1 and 2.
Refer to wiring diagram.
Conditions Continuity
Steering wheel is being fully turned. Yes
Steering wheel is not being turned. No
POWER STEERING OIL PRESSURE SWITCHQG18DE
Diagnostic Procedure (Cont'd)
EC-527
Page 955 of 3051
Wiring DiagramNLEC0582MODELS WITH ECM IN ENGINE COMPARTMENTNLEC0582S03
YEC683
REFRIGERANT PRESSURE SENSORQG18DE
Wiring Diagram
EC-530
Page 956 of 3051
MODELS WITH ECM IN CABINNLEC0582S04
YEC906
REFRIGERANT PRESSURE SENSORQG18DE
Wiring Diagram (Cont'd)
EC-531
Page 961 of 3051
Wiring DiagramNLEC0550MODELS WITH ECM IN ENGINE COMPARTMENTNLEC0550S04
YEC716
ELECTRICAL LOAD SIGNALQG18DE
Wiring Diagram
EC-536
Page 962 of 3051
YEC678
ELECTRICAL LOAD SIGNALQG18DE
Wiring Diagram (Cont'd)
EC-537
Page 963 of 3051
MODELS WITH ECM IN CABINNLEC0550S05
YEC907
ELECTRICAL LOAD SIGNALQG18DE
Wiring Diagram (Cont'd)
EC-538
Page 964 of 3051
YEC908
ELECTRICAL LOAD SIGNALQG18DE
Wiring Diagram (Cont'd)
EC-539
Page 970 of 3051
Wiring DiagramNLEC0466MODELS WITH ECM IN ENGINE COMPARTMENTNLEC0466S01
YEC679
MI & DATA LINK CONNECTORSQG18DE
Wiring Diagram
EC-545
