Page 1467 of 3051

4 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect power steering oil pressure switch harness connector.
SEF903Z
3. Check harness continuity between power steering oil pressure switch 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 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-1043.
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-670.
©INSPECTION END
POWER STEERING OIL PRESSURE SWITCHSR20DE
Diagnostic Procedure (Cont'd)
EC-1042
Page 1468 of 3051
Component InspectionNLEC1877POWER STEERING OIL PRESSURE SWITCHNLEC1877S011. 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
If NG, replace power steering oil pressure switch.
POWER STEERING OIL PRESSURE SWITCHSR20DE
Component Inspection
EC-1043
Page 1470 of 3051
Wiring DiagramNLEC1880MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1880S03
YEC707
REFRIGERANT PRESSURE SENSORSR20DE
Wiring Diagram
EC-1045
Page 1471 of 3051
MODELS WITH ECM IN CABINNLEC1880S04
YEC943
REFRIGERANT PRESSURE SENSORSR20DE
Wiring Diagram (Cont'd)
EC-1046
Page 1476 of 3051
Wiring DiagramNLEC1884MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1884S04
YEC716
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram
EC-1051
Page 1477 of 3051
YEC717
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1052
Page 1478 of 3051
MODELS WITH ECM IN CABINNLEC1884S05
YEC945
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1053
Page 1479 of 3051
YEC946
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1054