FixVault
Home › Volvo › 1990 › 760 GLE, AW71L › Repair and Diagnosis › External Pages › Different car › Section 9 (Anti-Lock Brake System) › Testing › Transient Surge Protector Circuit Test › Transient Surge Protector

Transient Surge Protector

WARNING: This page is about a different car, the 1989 Volvo 760 and 1989 Volvo 740. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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.
  2. 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 terminal No. 3 and ground. If only terminals No. 1 and 4 have voltage when terminal No. 3 is grounded, replace defective transient surge protector.
About FixVault