ANTI-THEFT SYSTEM -1995 Buick Riviera
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ENGINE CRANKS BUT DOES NOT START
1.Turn ignition off. Disconnect PASS-Key II decoder module connector. Turn ignition on. Measure voltage between PASS-Key II decoder module harness connector terminal A3 and ground. If voltage is about 5 volts, go to step 3). If voltage is not about 5 volts, go to next step. 2.Check Dark Blue wire for an open circuit or short to ground. Also check PCM connector C3, terminal D5 for good connection. If all circuits are okay, problem is with PCM. See the appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section. If circuits are not okay, repair as necessary. Refer to the following list.
Ã 3.8L, see: TESTS W/CODES - 3.8L
Ã 4.0L, see: TESTS W/CODES - 4.0L 3.If voltage was about 5 volts in step 1), turn ignition off. Reconnect PASS-Key II decoder module connector. Turn ignition on. Backprobe PASS-Key II decoder module, measuring voltage between terminal A3 and ground. If about 2.5 volts are present, system is okay. If about 2.5 volts are not present, check PASS-Key II decoder module connector terminal A3 for good connection. If terminal contact is okay, replace decoder module. PASS-KEY II(R) SYSTEM
1.Look into key opening and check key pellet sensing contacts in ignition key lock cylinder. If contacts are damaged, or not Silver in color, replace lock cylinder. Check ignition keys using PASS-Key II(R) Interrogator (J-35628-A). If key code window displays "E", or display is erratic, replace key. 2.Check ignition key for cracked, dirty or coated resistor pellet. Ensure key does not have excess plastic around resistor pellet contacts. If system is intermittent, check module connector for tightness.
Tuesday, September 9th, 2008 AT 4:47 PM