Nissan Murano Workshop Manual 2009 (49) PDF | Page 9

ENGINE SPEED SIGNAL CIRCUIT
STC-9
< COMPONENT DIAGNOSIS >
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ENGINE SPEED SIGNAL CIRCUIT
Description INFOID:0000000003305953
ECM sends engine speed signal to power steering control unit.
Diagnosis Procedure INFOID:0000000003305954
1.PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
1. Turn the ignition switch ON.
Perform ECM self-diagnosis. Refer to EC-115, "
CONSULT-III Function".
Is any DTC detected?
YES >> Check the DTC.
NO >> GO TO 2.
2.CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT
1. Turn the ignition switch OFF.
2. Disconnect ECM harness connectors.
3. Disconnect power steering control unit harness connector.
4. Check continuity between ECM harness connector and power steering control unit harness connector.
5. Check continuity between power steering control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK ENGINE SPEED SIGNAL (1)
1. Turn the ignition switch OFF.
2. Connect ECM harness connectors.
3. Check signal between ECM harness connector and ground with oscilloscope.
ECM Power steering control unit
Continuity
Connector Terminal Connector Terminal
E16 94 M61 10 Existed
Power steering control unit
? Continuity
Connector Terminal
M61 10 Ground Not existed
Revision: 2008 October 2009 Murano