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

Instrumentation, Message Center and Warning Chimes

Pinpoint Test

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

Normal Operation

The charging system warning indicator is controlled by the Instrument Cluster (IC) based upon data received from the PCM over the communication network.

This pinpoint test is intended to diagnose the following:

- Charging system concern
- PCM
- IC



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

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Y1 CHECK THE CHARGING SYSTEM OPERATION


- Check the charging system operation. Refer to Charging System.
- Is the charging system operating correctly?

Yes
GO to Y2.

No
REFER to Charging System.

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Y2 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.

No
GO to Y3.

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Y3 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 active command 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
INSTALL a new PCM. REFER to Computers and Control Systems Information. TEST the system for normal operation.

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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