Diagnosis Procedure
WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
CAUTION:
Before testing, perform the following procedure to ensure the engine cannot start.
- Remove fuel pump fuse.
- Crank or start the engine (where possible) until the fuel pressure is depleted.
- CHECK TERMINAL 1 POWER SUPPLY VOLTAGE
- Turn ignition switch OFF.
- Make sure that starter motor connector F27 terminal 1 connection is clean and tight.
- Check voltage between starter motor connector F27 terminal 1 and ground.
(+) (-) Voltage Connector Terminal F27 1 Ground Battery voltage Is there battery voltage present?
YES: GO TO 2
NO: Check harness between battery and starter motor for open circuit.
- CHECK BATTERY CABLE (VOLTAGE DROP TEST)
- Shift the transmission into park or neutral.
- Check voltage between battery positive terminal and starter motor connector F27 terminal 1 while cranking the engine.
(+) (-) Condition Voltage Connector Connector Terminal Battery (+) terminal F27 1 While cranking the engine Less than 0.2V Is the voltage drop less than 0.2V?
YES: GO TO 3
NO: 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.
(+) (-) Condition Voltage Starter motor case Battery (-) terminal While cranking the engine Less than 0.2V Is the voltage drop less than 0.2V?
YES: Terminal 1 circuit is OK. Further inspection is necessary. Refer to "WORK FLOW (WITH GR8-1200 NI) " or "WORK FLOW (WITHOUT GR8-1200 NI) ".
NO: Check the starter motor case to engine mounting for high resistance.