Pinpoint Test V: The LH Or RH Turn Indicator Is Never/Always On
Instrumentation and Warning Chimes
Pinpoint Tests
Pinpoint Test V: The LH Or RH Turn Indicator Is Never/Always On
Normal Operation
When the multifunction switch is in the LH or RH TURN position, a message is sent to the Instrument Cluster (IC) from the Generic Electronic Module (GEM) over the Medium Speed Controller Area Network (MS-CAN) communication bus. The IC, upon receipt of the LH or RH turn message, flashes the LH or RH turn signal indicator on and off.
If the LH or RH turn data is missing for less than 5 seconds, the LH or RH turn indicator remains in the last indication mode (on or off), based upon the last known good data message. If the LH or RH turn data is missing for more than 5 seconds, the IC defaults the LH or RH indicator off.
This pinpoint test is intended to diagnose the following:
- Turn signal concern
- GEM
- IC
PINPOINT TEST V: THE LH OR RH TURN INDICATOR IS NEVER/ALWAYS ON
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V1 CHECK THE LH OR RH TURN SIGNAL LAMPS OPERATION
- Operate the LH or RH turn signal. Observe the exterior LH or RH turn lamps.
- Do the turn signal lamps operate correctly?
Yes
GO to V2.
No
REFER to Exterior Lighting Testing and Inspection.
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V2 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 RH or LH turn signal indicator (RHTURN) or (LHTURN) active command. Command the RH or LH turn signal indicator on and off. Observe the LH or RH turn signal indicator.
- Does the LH or RH turn signal indicator illuminate when commanded on, and turn off when commanded off?
Yes
GO to V3.
No
INSTALL a new IC. REFER to Instrument Cluster (IC) Service and Repair. TEST the system for normal operation.
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V3 RETRIEVE THE RECORDED DTCs FROM THE GEM SELF-TEST
- Check for recorded GEM DTCs from the self-test.
- Are any DTCs recorded?
Yes
REFER to the Diagnostic Trouble Code (DTC) Chart in Multifunction Electronic Modules Diagnostic Trouble Code (DTC) Chart.
No
INSTALL a new GEM. REFER to Multifunction Electronic Modules Service and Repair. TEST the system for normal operation.
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