Nissan Murano: Starting System :: Dtc/circuit Diagnosis / B Terminal Circuit

Diagnosis Procedure

CAUTION:

Perform diagnosis under the condition that the engine cannot start by the following procedure:

CHECK TERMINAL B POWER SUPPLY VOLTAGE

1. Ignition switch OFF.

2. Make sure that starter motor connector connection is clean and tight.

3. Check voltage between starter motor connector and ground.

   (+)		(—)	Voltage (Approx.)
   Starter motor
   Connector	Terminal
   F27	B	Ground	Battery voltage

Is the inspection result normal?

GO TO 2.

Check harness between battery and starter motor for open circuit.

CHECK BATTERY CABLE (VOLTAGE DROP TEST)

1. Shift the transmission into P (Park) or N (Neutral).

2. Check voltage between battery positive terminal and starter motor connector while cranking the engine.

   (+)	(—)		Condition	Voltage (Approx.)
   	Starter motor
   	Connector	Terminal
   Battery (+) terminal	F27	B	While cranking the engine	Less than 0.5 V

Is the inspection result normal?

GO TO 3.

Check harness between the battery and the starter motor for high resistance.

CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)

Check voltage between starter motor case and battery negative terminal while cranking the engine.

Is the inspection result normal?

Terminal B circuit is OK. Further inspection is necessary. Refer to Work Flow (With 165-DSS-5000P), or Work Flow (Without 165-DSS-5000P).

Check the starter motor case to engine mounting for high resistance.