Nissan Altima 2007-2012 Service Manual: B terminal circuit

Description

The “B” terminal is constantly supplied with battery power.

Diagnosis Procedure

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

1. Remove fuel pump fuse.

2. Crank or start the engine (where possible) until the fuel pressure is depleted.

1.CHECK TERMINAL B POWER SUPPLY VOLTAGE

1. Turn ignition switch OFF.

2. Make sure that starter motor connector F27 terminal B connection is clean and tight.

3. Check voltage between starter motor connector F27 terminal B and ground.

Is there battery voltage present? YES >> GO TO 2

NO >> Check harness between battery and starter motor for open circuit.

2.CHECK BATTERY CABLE (VOLTAGE DROP TEST)

1. Shift CVT selector lever to “P” or “N” position. (CVT models) Press and hold the clutch pedal fully with the control lever in neutral. (M/T models) 2. Check voltage between battery positive terminal and starter motor connector F27 terminal B while cranking the engine.

Is the voltage drop less than 0.5V? YES >> GO TO 3

NO >> Check harness between the battery and the starter motor for high resistance.

3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)

1. Shift CVT selector lever to “P” or “N” position. (CVT models) Press and hold the clutch pedal fully with the control lever in neutral. (M/T models) 2. Check voltage between battery positive terminal and starter motor connector F27 terminal B while cranking the engine.

Is the voltage drop less than 0.5V? YES >> GO TO 3

NO >> Check harness between the battery and the starter motor for high resistance.

3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)

1. Shift CVT selector lever to “P” or “N” position. (CVT models) Press and hold the clutch pedal fully with the control lever in neutral. (M/T models) 2. Check voltage between starter motor case and battery negative terminal while cranking the engine.

Is the voltage drop less than 0.2V? YES >> Terminal B circuit is OK. Further inspection necessary.

Refer to STR-29, "Work Flow".

NO >> Check the starter motor case to engine mounting for high resistance.

    S connector circuit
    Description The starter motor magnetic switch is supplied with power when the ignition switch is turned to the START position while the selector lever is in the P or N position (CVT models) or th ...

    Other materials:

    Main line between dlc and abs circuit
    Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). - Harness co ...

    Locking with power door lock switch
    Door lock switch To lock all the doors without a key, push the door lock switch (driver’s or front passenger’s side) to the lock position 1 . When locking the door this way, be certain not to leave the key inside the vehicle. To unlock all the doors without a key, push the door lock s ...

    The light reminder warning does not sound
    Description Light reminder warning does not sound even though headlamp is illuminated. Diagnosis Procedure 1. CHECK COMBINATION SWITCH (LIGHT SWITCH) OPERATION Check that the headlamps operate normally by operating the combination switch (light switch). Do they operate normally? YES > ...