LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2005 >> STS 3.6 7 >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting Systems (Symptoms) >> Twilight Sentinel Inoperative

Twilight Sentinel Inoperative

Twilight Sentinel Inoperative

Step Action Yes No
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics
Connector End View Reference: Master Electrical Component List in Wiring Systems
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 Do the headlamps and DRL operate properly? Go to Step 3  Go to Daytime Running Lamps (DRL) Inoperative (Domestic/Canadian)  or Daytime Running Lamps (DRL) Inoperative (Norway/Sweden)  or Headlamps Inoperative - Low Beams (Standard Headlamps)  or Headlamps Inoperative - Low Beams (HID Headlamps) 
3
  1. Install a scan tool.
  2. Turn ON the ignition, with the engine OFF.
  3. Place the headlamp switch in the AUTO position.
  4. With a scan tool, observe the Twilight Enable parameter in the instrument panel module (IPM) exterior lamps data list.
Does the Twilight Enable parameter display ENABLED?		 Go to Step 8  Go to Step 4 
4
  1. Turn OFF the ignition.
  2. Disconnect the turn signal/multifunction switch C3 harness connector.
  3. Connect a 3-amp fused jumper between the turn signal/multifunction switch twilight sentinel display signal circuit at the turn signal/multifunction switch C3 harness connector and the ground circuit of the turn signal/multifunction switch at the C3 harness connector.
  4. Turn ON the ignition, with the engine OFF.
  5. With a scan tool, observe the Twilight Enable parameter in the IPM exterior lamps data list.
Does the Twilight Enable parameter display ENABLED?		 Go to Step 7  Go to Step 5 
5 Test the turn signal/multifunction switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 6 
6 Test the twilight sentinel display signal circuit for an open, high resistance, or short to voltage. Refer to Circuit Testing andWiring Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 8 
7 Inspect for poor connections at the C3 harness connector of the turn signal/multifunction switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 9 
8 Inspect for poor connections at the harness connector of the IPM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?		 Go to Step 11  Go to Step 10 
9 Replace the turn signal/multifunction switch. Refer to Multifunction, Turn Signal Switch Replacement in Steering Wheel and Column.
Did you complete the replacement?		 Go to Step 11  -
10 Replace the IPM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the replacement?		 Go to Step 11  -
11 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 2 
scientia non olet · About LEMON Manuals