▶ Fault is intermittent caused by poor contact in Antenna Coil’s and/or ECM/PCM’s connector or was repaired and ICU’s and/or ECM/PCM memory was not cleared.

Therefore, Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Substitute with a known-good transponder and check for proper operation. If the problem is corrected, replace transponder and then go to "Verification of Vehicle Repair" procedure.

▶ After replacing Transponder, Register transponder key by GDS.