Test H: Odometer Inoperative
NOTE:
Instrument cluster receives odometer signal from Powertrain Control Module (PCM) through the Standard Corporate Protocol (SCP) bus circuit. PCM receives vehicle speed signal from output shaft sensor. If instrument cluster does not receive odometer rolling count status for two seconds, dashes will be displayed in odometer display.
NOTE:
Perform all voltage and resistance tests using a Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.
- Turn ignition switch to RUN position. If odometer displays all dashes, repair odometer input from PCM. See SELF-DIAGNOSTICS - EEC-V - GASOLINE & NGV article in ENGINE PERFORMANCE. If odometer does not display all dashes, go to next step.
- Disconnect all instrument cluster harness connectors. It may be necessary to remove instrument cluster for access to instrument cluster harness connectors. See INSTRUMENT CLUSTER MODULE under REMOVAL & INSTALLATION. Inspect all instrument cluster harness connectors for loose, damaged or corroded terminals. If terminals are damaged, repair or replace as necessary. If terminals are not damaged, reconnect all instrument cluster harness connectors. Ensure instrument cluster harness connectors are seated properly. If problem still exists, replace instrument cluster module. After repair, clear DTCs, repeat self-test and check system for normal operation.