Pinpoint Test K: The Charging System Warning Indicator Is Never/Always On
Instrumentation, Message Center and Warning Chimes
Pinpoint Tests
Pinpoint Test K: The Charging System Warning Indicator Is Never/Always On
Normal Operation
The Instrument Cluster (IC) receives the charging system status from the PCM over the High Speed Controller Area Network (HS-CAN). Charging system data is monitored by the IC and when the charging system voltage is low, illuminates the charging system warning indicator.
This pinpoint test is intended to diagnose the following:
- Charging system
- PCM
- IC
PINPOINT TEST K: THE CHARGING SYSTEM WARNING INDICATOR IS NEVER/ALWAYS ON
-------------------------------------------------
K1 CARRY OUT THE IC INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger .
- Select the IC charging system warning indicator (CHARGE_LMP) active command. Command the charging system warning indicator on and off. Observe the charging system warning indicator.
- Does the charging system warning indicator illuminate when commanded on and turn off when commanded off?
Yes
GO to K2.
No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.
-------------------------------------------------
K2 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO SELF-TEST
- Check for recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.
- Are any charging system DTCs recorded?
Yes
REFER to Charging System Testing and Inspection.
No
GO to K3.
-------------------------------------------------
K3 CHECK THE CHARGING SYSTEM OPERATION
- Check the charging system operation. Refer to Charging System Testing and Inspection.
- Does the charging system operate correctly?
Yes
INSTALL a new PCM. REFER to Electronic Engine Controls Service and Repair. TEST the system for normal operation.
No
REFER to Charging System Testing and Inspection.
-------------------------------------------------