Precheck

Precheck Diagnosis Procedure





Description
ECM controls the function of immobilizer on this vehicle. Data of the immobilizer or DTC can be read form DLC3 of the vehicle. When a trouble occurs on immobilizer, MIL does not light on but DTC inspection is performed. Therefore when there seems to be a trouble on immobilizer, use TOYOTA hand-held tester or SST to check and troubleshoot it.


1. Inspect the DLC 3.
Scan Tool Testing and Procedures

2. Check for DTC's
How to Display and Read Diagnostic Codes

3. Clear DTC's
How to Clear Diagnostic Trouble Codes

4. Measure PCM Terminal Values