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5 CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 89 and PSP sensor terminal 2.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK © GO TO 6.
NG © Repair open circuit or short to ground or short to power in harness or connectors.
6 CHECK PSP SENSOR
Refer to “Component Inspection”, EC-454.
OK or NG
OK © GO TO 7.
NG © Replace PSP sensor.
7 CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-156.
© INSPECTION END
SEC049D
Component Inspection
NFEC1257
POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 89 and ground under
the following conditions.
Condition Voltage
Steering wheel is turned fully. Approximately 3.6V
Steering wheel is not turned. Approximately 0.6V
DTC P0550 PSP SENSOR
Diagnostic Procedure (Cont’d)
EC-454
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