LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 1994 >> Wrangler SE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Self-Diagnostic Tests >> Test 28B - Diagnosing Courtesy Light Circuit
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 28B - Diagnosing Courtesy Light Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagram, see WIRING DIAGRAMS article in this section.
CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.
  1. Using DRB, actuate courtesy lights. If courtesy lights cycle on and off, go to TEST 29A  . If courtesy lights do not cycle on and off, go to next step.
  2. Turn ignition off. Access left pod switch Black connector. Using DRB in voltmeter mode, check voltage on fused battery feed circuit (Pink wire) at left pod switch Black connector terminal No. 4. If voltage is more than 10 volts, go to step 4). If voltage is less than 10 volts, go to next step.
  3. Remove and inspect IOD fuse in fuse block. If fuse is blown, go to TEST 28C  . If fuse is okay, check voltage on battery feed circuit (Black/Red wire) at IOD fuse. If voltage is more than 10 volts, repair open Black/Red wire. Perform TEST VER-1B  . If voltage is less than 10 volts, repair Pink wire as necessary. Perform TEST VER-1B  .
  4. With dimmer control lever in center position, check voltage on courtesy light switch output circuit (Pink/Light Blue wire) at left pod switch Black connector terminal No. 5. If voltage is less than 10 volts, replace left pod switch. Perform TEST VER-1B  . If voltage is more than 10 volts, go to next step.
  5. Gain access to rear dome light terminals. Check voltage on courtesy light switch output circuit (Pink/Light Blue wire) at dome light connector. If voltage is less than 10 volts, repair open Pink/Light Blue wire. Perform TEST VER-1B  . If voltage is more than 10 volts, go to next step.
  6. Check voltage on courtesy lights driver circuit (Yellow wire) at dome light connector. If voltage is less than 10 volts, replace open bulb. Perform TEST VER-1B  . If voltage is more than 10 volts, repair open Yellow wire. Perform TEST VER-1B  .
scientia non olet · About LEMON Manuals