LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Oldsmobile >> 1996 >> Eighty-Eight Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Anti-Theft System) >> Testing >> Pass-Key II(R) System Testing >> Operates Normally
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Operates Normally

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.
  1. Perform PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK. Turn ignition off. Disconnect starter enable relay connector. Connect a fused jumper wire between starter enable relay connector terminals C1 (Yellow wire) and A2 (Purple wire). Try to start engine.
  2. If engine does not crank or start, check for open or short to ground in Yellow wire between ignition switch and starter enable relay, or Purple wire between starter enable relay and starter solenoid. If Yellow wire and Purple wire are okay, diagnose problem with starting system. See STARTER article in ELECTRICAL section. Go to next step.
  3. If engine cranks but does not start, check for open or short to ground in Pink wires between instrument panel fuse block (located behind left side of dash) and PASS-Key II(R) decoder module, or Red wire between PASS-Key II(R) decoder module and right maxi fuse block (located in right rear of engine compartment). Check for open in Black/White wire between PASS-Key II(R) decoder module and ground. Also, check for poor connections at PASS-Key II(R) decoder module. If Pink wires, Red wire, Black/White wire and connections are okay, replace PASS-KEY II(R) decoder module. Repeat PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK.
  4. If engine cranks and starts, using DVOM, measure voltage between starter enable relay terminal C2 (Purple wire) and ground while trying to start engine. If battery voltage is not present, repair open or short to ground in Purple wire between starter enable relay and instrument panel fuse block. Repeat PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK. If battery voltage is present, using DVOM, measure voltage between starter enable relay terminals C2 (Purple wire) and A1 (Yellow wire) while trying to start vehicle.
  5. If battery voltage is present, replace starter enable relay. Repeat PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK. If battery voltage is not present, check for open or short to ground in Yellow wire between starter enable relay and park/neutral position switch, or Yellow/Black wire between park/neutral position switch and PASS-KEY II(R) decoder module. If Yellow wire and Yellow/Black wire are okay, check park/neutral position switch. Replace as necessary. If park/neutral position switch is okay, check PASS-KEY II(R) decoder module for poor connections. If connections are okay, replace PASS-KEY II(R) decoder module. Repeat PASS-KEY II(R) DIAGNOSTIC SYSTEM CHECK.
scientia non olet · About LEMON Manuals