Symptom Related Diagnostic Procedures

Condition(s):

DTC P1146 Low input from the PCM on the voltage regulator request signal wire
Possible Source(s):
- Circuit.
- Generator.
- Powertrain control module (PCM).

Action(s) to take:
- GO to Pinpoint Test A. A: Low Input on Voltage Regulator Request Signal Wire (P1146)

DTC P1244 Generator overcharging
Possible Source(s):
- Generator.
- Circuit.
- Battery.

Action(s) to take:
- GO to Pinpoint Test B. B: Generator Overcharging (P1244)

DTC P1629 Generator load monitoring signal failure
Possible Source(s):
- Circuit.
- Generator.
- PCM.

Action(s) to take:
- GO to Pinpoint Test D. D: Generator Load Monitoring Signal Failure

DTC P1632 Charging system failure
Possible Source(s):
- Fuse 82 (20A).
- Circuit.
- Generator.
- Battery.
- PCM.

Action(s) to take:
- GO to Pinpoint Test C. C: Charging System Failure (P1632)

The charging system warning indicator is on, intermittent or flickers with the engine running
Possible Source(s):
- Accessory drive belt.
- Fuse 82 (20A).
- Circuit.
- Generator.
- Generator pulley (vehicles fitted with manual transmission).
- Battery.
- PCM.
- Instrument cluster (IC).
- Control area network (CAN).

Action(s) to take:
- CHECK the accessory drive belt tension.
- GO to Pinpoint Test E. E: Charge Warning Indicator Lamp Is on With the Engine Running

Generator not charging, battery keeps going flat
Possible Source(s):
- Accessory drive belt.
- Fuse 82 (20A).
- Circuit.
- Generator.
- Generator pulley (vehicles fitted with manual transmission).
- Battery.

Action(s) to take:
- CHECK drive belt tension.
- GO to Pinpoint Test F. F: Generator Not Charging - Battery Keeps Going Flat

Generator noisy
Possible Source(s):
- Accessory drive belt.
- Accessory drive belt tensioner.
- Generator pulley (vehicles fitted with manual transmission).

Action(s) to take:
- CHECK the accessory drive belt and tensioner.
- GO to Pinpoint Test G. G: Generator Noisy

Radio interference
Possible Source(s):
- Circuit.
- Generator.

Action(s) to take:
- GO to Pinpoint Test H. H: Radio Interference