Pinpoint Test At: DTC U021:00 And U0121:87
WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
- AT1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to AT2.
- 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.
- AT2 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 AT3.
- No : REFER to MODULE COMMUNICATIONS NETWORK .
- AT3 RETRIEVE THE RECORDED DTCs FROM THE IPC AND ABS MODULE SELF-TESTS
- Check for recorded DTCs from the IPC and ABS module self-tests.
- Is DTC U3003:16 or DTC U3003:17 recorded in the IPC or DTC B1317 or B1318 recorded in the ABS module?
- Yes
: For IPC DTC U3003:16, GO to PINPOINT TEST BB .
For IPC DTC U3003:17, GO to PINPOINT TEST BC .
For the ABS module, REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL .
- No : GO to AT4.
- AT4 RECHECK THE IPC DTCs
- Clear the DTCs. Repeat the IPC self-test.
- Is DTC U021:00 or U0121:87 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 U021:00 or U0121:87 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.