Pinpoint Test E: DTC U0155
- E1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to E2.
- 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.
- E2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the IC pass the network test?
- Yes : GO to E3.
- No : REFER to MODULE COMMUNICATIONS NETWORK , The IC Does Not Respond To The Scan Tool.
- E3 RETRIEVE THE RECORDED DTCs FROM THE SELF-TEST
- Check for recorded GEM DTCs from the self-test.
- Is DTC B1317 or DTC B1318 recorded?
- Yes
: For DTC B1317, GO to PINPOINT TEST A .
For DTC B1318, GO to PINPOINT TEST B .
- No : GO to E4.
- E4 RECHECK THE GEM DTCs NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during Programmable Module Installation (PMI) or the PMI may not have been carried out.
- Clear the DTCs. Repeat the GEM self-test.
- Is DTC U0155 still present?
- Yes : GO to E5.
- 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.
- E5 CHECK FOR DTC U0155 OR U0155:00 SET IN OTHER MODULES
- Clear all DTCs.
- Ignition OFF.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0155 or U0155:00 set in any other module?
- Yes : INSTALL a new IC. REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . TEST the system for normal operation.
- No : INSTALL a new GEM. REFER to GENERIC ELECTRONIC MODULE (GEM) . TEST the system for normal operation.