LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Dodge and Ram >> 1993 >> Grand Caravan Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Body Control Computer >> Connector Identification >> Test 33B - Checking For Open Key-In Light Circuit
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 33B - Checking For Open Key-In Light Circuit

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION. For wiring diagrams, see WIRING DIAGRAMS article in the ENGINE PERFORMANCE Section. Perform TEST VER - 1A after each repair.
CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
  1. Disconnect Blue body controller connector. Body controller is located under left side of instrument panel. Check connector, and clean or repair connector as necessary.
  2. Using DRB-II in voltmeter mode, measure voltage of key-in light control circuit at Blue body controller connector terminal No. 19 (Yellow/Red wire). If voltage is more than 10 volts, replace body controller. If voltage is less than 10 volts, gain access to key-in ignition switch connector.
    NOTE: Key-in ignition switch connector MUST remain connected during following steps.
  3. Measure voltage of key-in light control circuit at key-in ignition switch connector terminal No. 4 (Yellow/Red wire). If voltage is more than 10 volts, repair open Yellow/Red wire. If voltage is less than 10 volts, go to next step.
  4. Measure voltage of courtesy light switched supply circuit at key-in ignition switch connector terminal No. 3 (Pink/Light Blue wire). If voltage is less than 10 volts, repair open Pink/Light Blue wire. If voltage is more than 10 volts, go to next step.
  5. Remove key-in light bulb. Inspect bulb and socket. If bulb and socket are not okay, repair or replace as necessary. If socket is okay, replace key-in light bulb.