Pinpoint Tests AB: The Charging System Message Center Warning Indicator Is Never/Always On
Instrumentation, Message Center and Warning Chimes
Pinpoint Test AB: The Charging System Message Center Warning Indicator Is Never/Always On
Normal Operation
The charging system indicator is controlled by the Instrument Cluster (IC) based upon data received from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus.
If the charging system message is missing for less than 5 seconds, the IC defaults the charging system warning indicator to the last on/off state, based upon the last known good charging system status message received.
If the charging system message is missing for more than 5 seconds, the IC sets DTC U0100 in continuous memory and defaults the charging system warning indicator on.
NOTE: If DTC U0100 is set in the IC, other observable symptoms may be an inoperative speedometer, tachometer or odometer.
This pinpoint test is intended to diagnose the following:
- Charging system concern
- PCM
PINPOINT TEST AB: THE CHARGING SYSTEM MESSAGE CENTER WARNING INDICATOR IS NEVER/ALWAYS ON
