Odometer Does Not Switch Between Trip & Mileage: Alero
WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
- Perform INSTRUMENT PANEL CLUSTER SYSTEM CHECK under SYSTEM TESTS. Go to next step.
- Disconnect odometer reset switch connector. See Fig 1 . Turn ignition on. Connect scan tool to DLC and select IPC data display. Monitor trip reset switch data. Connect fused jumper between ground and trip reset switch connector terminal "A" (Light Green wire). See WIRING DIAGRAMS . If trip reset switch data displays ACTIVE, go to next step. If trip reset switch data does not display ACTIVE, go to step 6 .
- Monitor trip reset switch data. Connect fused jumper between trip reset switch connector terminals "A" (Light Green wire) and "B" (Black/White wire). If trip reset switch data displays ACTIVE, go to next step. If trip reset switch data does not display ACTIVE, go to step 5 .
- Replace odometer reset switch. After repairs, go to INSTRUMENT PANEL CLUSTER SYSTEM CHECK under SYSTEM TESTS.
- Repair open in Black/White wire between trip reset switch connector and ground. After repairs, go to INSTRUMENT PANEL CLUSTER SYSTEM CHECK under SYSTEM TESTS.
- Remove connector comb from IPC connector. Connect fused jumper between ground and IPC connector terminal B9 (Light Green wire). See Figure . Monitor trip reset switch data on scan tool. If trip reset switch data displays ACTIVE, go to next step. If trip reset switch data does not display ACTIVE, go to step 8 .
- Repair open in Light Green wire between odometer reset switch and IPC. After repairs, go to INSTRUMENT PANEL CLUSTER SYSTEM CHECK under SYSTEM TESTS.
- Replace instrument panel cluster. See INSTRUMENT PANEL CLUSTER (IPC) under REMOVAL & INSTALLATION. After repairs, go to INSTRUMENT PANEL CLUSTER SYSTEM CHECK under SYSTEM TESTS.