Transient Surge Portector
- Turn ignition on. Connect a DVOM between terminal No. 1 on ECU connector and ground. DVOM should read 12 volts. If voltage is not present, measure voltage on transient surge protector connector.
- Transient surge protector is located to right of ECU (under dash) above converter. Terminals No. 1,2 and 4 should have voltage present. Check for continuity between terminals No. 3 and ground. If only terminals No. 1 and 4 have voltage when terminal No. 3 is grounded, replace defective transient surge protector.