Charging System Indicator Circuit Troubleshooting
Charging System Indicator Circuit Troubleshooting1. Turn the ignition switch ON (II).
Does the charging system indicator come on?
YES - Go to step 2.
NO - Go to step 6.
2. Start the engine.
Does the charging system indicator go off?
YES - Charging system indicator circuit is OK. Go to the Alternator and Regulator Circuit Troubleshooting.
NO - Go to step 3.
3. Turn the ignition switch OFF.
4. Disconnect the alternator 4P connector from the alternator.
5. Turn the ignition switch ON (II).
Does the charging system indicator come on?
YES - Turn the ignition switch OFF, and repair the short in the WHT/BLU wire. If the WHT/BLU wire is shorted to ground, the voltage regulator in the alternator may be damaged.
NO - Go to step 9.
6. Turn the ignition switch OFF.
7. Disconnect the alternator 4P connector from the alternator.
8. Connect the alternator 4P connector terminal No. 3 to body ground with a jumper wire. Turn the ignition switch ON (II).
Does the charging system indicator come on?
YES - Go to step 9.
NO - Turn the ignition switch OFF. Check for a blown No. 6 (15 A) fuse and a blown charging system light bulb. If the fuse and bulb are OK, repair the open in the BLK/YEL or WHT/BLU wire to the indicator bulb.
9. Measure the voltage at the No. 1 terminal of the alternator 4P connector with the ignition switch ON (II).
Is there battery voltage?
YES - Go to Alternator and Regulator Circuit Troubleshooting.
NO - Repair an open in the BLK/YEL wire between the alternator and the driver's under-dash fuse relay box.