Test L: The Charging System Warning Indicator Is Never/Always On

PINPOINT TEST L: THE CHARGING SYSTEM WARNING INDICATOR IS NEVER/ALWAYS ON

L1-L4:

Normal Operation
The charging system warning indicator is controlled by the instrument cluster based on data received from the powertrain control module (PCM). The instrument cluster sets DTC B1317 if the battery voltage exceeds 16.5 volts DC ± 0.5 volt DC, when the ignition switch is in the START or RUN position. The instrument cluster sets DTC B1318 if battery voltage drops to less than 9 volts DC ± 0.5 volt DC, when the ignition switch is in the START or RUN position.

Possible Causes
- charging system
- PCM
- instrument cluster