Pinpoint Test Y: The Speed Control Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test Y: The Speed Control Indicator Is Never/Always On

Normal Operation

The Instrument Cluster (IC) receives the speed control data from the PCM through the communication network. When the speed control is engaged, the PCM provides a signal to the IC to illuminate the speed control indicator.

This pinpoint test is intended to diagnose the following:

- PCM
- IC



PINPOINT TEST Y: THE SPEED CONTROL INDICATOR IS NEVER/ALWAYS ON

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Y1 CHECK THE SPEED CONTROL OPERATION


- Test drive the vehicle and operate the speed control.
- Does the speed control operate correctly?

Yes
GO to Y2.

No
REFER to Cruise Control.

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Y2 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 speed control indicator (CRUISE) active command while monitoring the speed control indicator.
- Does the speed control indicator illuminate when commanded on, and turn off when commanded off?

Yes
INSTALL a new PCM. 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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