Pinpoint Test Bk: DTC U0121:00

BK1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes: GO to BK2.
- No: The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.
BK2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the ABS module pass the network test?
- Yes: GO to BK3.
- No: REFER to MODULE COMMUNICATIONS NETWORK .
BK3 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST
- Check for recorded DTCs from the IPC self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?
- Yes: GO to PINPOINT TEST BX (U3003:16) or GO to PINPOINT TEST BY (U3003:17).
- No: GO to BK4.
BK4 RECHECK THE IPC DTCs
- Clear the DTCs. Repeat the IPC self-test.
- Is DTC U0121:00 still present?
- Yes: INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL . CLEAR the DTCs. REPEAT the IPC self-test.
  If DTC U0121:00 is still present, INSTALL a new IPC. REFER to INSTRUMENT PANEL CLUSTER (IPC) . TEST the system for normal operation.
- No: The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.