Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 1993 >> Grand Cherokee Base, 5.2 Y, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System >> Testing >> Test 7A - Repairing Security Indicator Light Circuit

Test 7A - Repairing Security Indicator Light Circuit

NOTE: For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAM  .
NOTE: Perform TEST 1A  before proceeding with TEST 7A.
  1. Turn ignition on. If security indicator light is constantly on, go to TEST 7B  . If security light is not on constantly, turn ignition off and disconnect VTA module. See Figure in TEST 1A and see VEHICLE THEFT ALARM MODULE  under REMOVAL & INSTALLATION. Inspect connector, clean and repair as needed. Turn ignition on. Connect jumper wire between VTA module connector terminal No. 17 (Black/Orange wire) and ground.
  2. If security light comes on, replace VTA module. See VEHICLE THEFT ALARM MODULE  under REMOVAL & INSTALLATION. Perform TEST VER-1  . If security light does not come on, disconnect Mechanical Instrument Cluster (MIC) connector. Remove instrument cluster. See appropriate INSTRUMENT PANEL article in ACCESSORIES & EQUIPMENT section. Visually inspect condition of instrument cluster circuit board. Replace circuit board if damaged. Perform TEST VER-1  .
  3. If circuit board is okay, inspect security indicator light bulb. Replace bulb if open. Perform TEST VER-1  . If security indicator light bulb is okay, go to next step.
  4. With DRB in voltmeter mode, check voltage at MIC connector terminal No. 15 (Pink/Dark Blue wire). If voltage is less than 10 volts, repair open fused battery feed circuit (Pink/Dark Blue wire). Perform TEST VER-1  . If voltage is more than 10 volts, repair open security indicator light control circuit (Black/Orange wire). Perform TEST VER-1  .
scientia non olet · About Mike's Workshop Manuals