Engine Cranks But Does Not Start
WARNING: This page is about a different car, the 1996 Oldsmobile Ninety-Eight and 1996 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.
- Perform PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK. Turn ignition off. Disconnect PASS-KEY II(R) decoder module connector. Turn ignition on. Using DVOM, measure voltage between PASS-KEY II(R) decoder module connector terminal A3 (Dark Blue wire) and ground.
- If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, check for open or short to ground in Dark Blue wire between PASS-KEY II(R) decoder module and Powertrain Control Module (PCM). Also, check for poor connections at PCM. Repair or replace as necessary and repeat PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK. If Dark Blue wire and connections are okay, diagnose possible faulty PCM. See TESTS W/CODES article.
- Turn ignition off. Reconnect PASS-KEY II(R) decoder module connector. Turn ignition on. Using DVOM, measure voltage between PASS-KEY II(R) decoder module connecter terminal A3 (Dark Blue wire) and ground. If voltage is about 2.5 volts, PASS-Key II(R) system is functioning properly. If voltage is not about 2.5 volts, check for poor connections at PASS-KEY II(R) decoder module. If connections are okay, replace PASS-KEY II(R) decoder module. Repeat PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK.