Diagnostic Routine I
Diagnostic Routine I
Diagnostic Overview
The Odometer Is Inoperative
Normal Operation and Fault Conditions
NOTE: If DTC (Diagnostic Trouble Code) U0100:00 sets in the IPC (Instrument Panel Cluster), other observable symptoms can be an inoperative speedometer, tachometer or temperature gauge.
REFER to Odometer .
If the wheel rotation count message is missing for 2 seconds or less, the IPC (Instrument Panel Cluster) defaults the odometer to the last display, based upon the last known good odometer rolling count message.
If the BCM (Body Control Module) does not receive the wheel rotation count message from the ABS (Anti-Lock Brake System) module for more than 2 seconds, the BCM (Body Control Module) and the IPC (Instrument Panel Cluster) set DTC (Diagnostic Trouble Code) U0121:00 and the IPC (Instrument Panel Cluster) defaults the odometer display to all dashes (-----).
If the odometer count message is deemed invalid by the IPC (Instrument Panel Cluster), the IPC (Instrument Panel Cluster) defaults the odometer display to all dashes (-----). If a NVM (Non-Volatile Memory) becomes corrupted or if any NVM (Non-Volatile Memory) failure occurs, the message ERROR displays in the odometer display area.
Pinpoint Test
1. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE ABS (Anti-Lock Brake System) MODULE SELF-TEST
1. Using a scan tool, perform the ABS (Anti-Lock Brake System) module self-test.
Are any DTCs (Diagnostic Trouble Codes) recorded?
2. CHECK FOR CORRUPTED NVM (Non-Volatile Memory)
1. Ignition ON.
2. Observe the message center display area.
Does the odometer display ERROR?
3. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE IPC (Instrument Panel Cluster) SELF-TEST
1. Using a scan tool, perform the IPC (Instrument Panel Cluster) self-test.
Are any DTCs (Diagnostic Trouble Codes) recorded?
4. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE BCM (Body Control Module) SELF-TEST
1. Using a scan tool, perform the BCM (Body Control Module) self-test.
Are any DTCs (Diagnostic Trouble Codes) recorded?