Fault, Fault code Possible causes, elimination, notes · Test point 20

Fault, Fault code Possible causes, elimination, notes Test point 20 Status lead, 1. Pull off plug I on the alarm control module. signal converter 2. Pull off the plug on the signal converter for the transponder. Short to ground Fault code 20 3. Ohmmeter on alarm control module plug I pin 12 and ground. Display: 00.0. If display < 5 .0.,check wiring harnessfor chafing and pinching damage. Test point 21 W-iead(DME - 1. Pull off plug I on the alarm control module. immobilizer) 2. Unplugthe DME (ECM)connector. Open circuit Fault code 21 3. Ohmmeter at plug I, alarm control module pin 23, and DME plug pin 88. Display: < 5 Q Note The lead is routed via plug connection X 3/1 pin 14. 4. Ohmmeter on alarm control module plug I pin 23 and ground. Display: 00.Q 5. Voltmeter at plug I alarm control module pin 23 and ground, Switch ignition on. Display:a Volt If no fault can be detected in the wires, either the DME control module or the alarm system control module is faulty. 90 -D 38 9001 Diagnosis/troubleshooting, alarm system two-motor lock