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Test 57B - Instrument Cluster Sense Circuits

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see appropriate article in ENGINE PERFORMANCE:
  1. Using scan tool, read cluster ID. If scan tool displays CLUSTER ID CHRY/EAGL, go to step 3). If scan tool does not display CLUSTER ID CHRY/EAGL, turn ignition off. Disconnect instrument cluster connectors. Using scan tool, read cluster ID. If scan tool displays CLUSTER ID CHRY/EAGL, replace instrument cluster. If scan tool does not display CLUSTER ID CHRY/EAGL, go to next step.
  2. Disconnect Body Control Module (BCM) connectors. BCM is located behind right kick panel. Using scan tool in ohmmeter mode, check resistance of BCM Gray connector terminal No. 12 (Orange/Dark Blue wire). If resistance is less than 5 ohms, repair short to ground in Orange/Dark Blue wire. If resistance is more than 5 ohms, replace BCM.
    NOTE: Metric speedometer head displays KM/H letters larger than MPH letters.
  3. If speedometer is not a metric unit, go to step 6) If speedometer is a metric unit, use scan tool to read instrument cluster mode status. If scan tool displays MIC MODE KM/H, repair or replace instrument cluster as necessary. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If scan tool does not display MIC MODEKM/H, go to next step.
  4. Ensure ignition switch is in OFF position. Disconnect instrument cluster connectors. If scan tool displays MIC MODE KM/H, repair or replace instrument cluster as necessary. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If scan tool does not display MIC MODE KM/H, go to next step.
  5. Disconnect BCM connectors. Using scan tool in ohmmeter mode, check resistance of BCM Gray connector terminal No. 7 (Light Blue wire). If resistance is less than 5 ohms, repair short to ground in Light Blue wire. If resistance is more than 5 ohms, replace BCM.
  6. Using scan tool, read MIC mode status. If scan tool displays MIC MODE MPH, repair or replace instrument cluster as necessary. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If scan tool does not display MIC MODE MPH, go to next step.
  7. Ensure ignition switch is in OFF position. Disconnect instrument cluster connectors and BCM connectors. Turn ignition on. Using scan tool in voltmeter mode, check voltage on BCM Gray connector terminal No. 7 (Light Blue wire). If voltage is more than 10 volts, repair short to battery voltage in Light Blue wire and replace instrument cluster. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If voltage is less than 10 volts, go to next step.
  8. Reconnect BCM connectors. Connect jumper wire between instrument cluster Black connector terminal No. 9 (Light Blue wire) and chassis ground. If scan tool displays MIC MODE MPH, repair or replace instrument cluster. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. If scan tool does not display MIC MODE MPH, go to next step.
  9. Disconnect jumper wire. Gain access to BCM. Connect jumper wire between BCM Gray connector terminal No. 7 (Light Blue wire) and chassis ground. If scan tool displays MIC MODE MPH, repair open Light Blue wire. If scan tool does not display MIC MODE MPH, replace BCM.
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