Diagnostic Procedure
Turn ignition on. Measure voltage between ground and terminal No. 14 (Red/Black wire) of theft deterrent ECU harness connector. Voltage should be 10-14 volts. If voltage is not as specified, check ECU-IG (15-amp) fuse in instrument panel fuse block. Replace fuse if blown, if fuse blows again, repair short to ground in Red/Black wire between theft deterrent ECU harness connector and ECU-IG fuse. If fuse is okay, repair open in Red/Black wire. If voltage is as specified, replace theft deterrent ECU. Retest system.