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Headlight Time Delay: Diagnosis Eagle Vision I

Headlights 1 illustration ~1595 words

TESTING

Note. Testing of the headlight time delay system requires using a DRB tester to check circuits connected to the body control computer. Only those specific tests for the headlight time delay system are included here. See INTRODUCTION in the TESTS W/CODES - BODY CONTROL COMPUTER article in the ENGINE PERFORMANCE section for complete body control computer tests.

Identifying BCM Connector (Bone Or Gray) Terminals. Scheme 1

Scheme 1: Identifying BCM Connector (Bone Or Gray) Terminals
Scheme 1: Identifying BCM Connector (Bone Or Gray) Terminals

TEST 1A - VEHICLE EQUIPMENT & SYSTEM PROBLEMS ID

  1. Connect DRB to Data Link Connector (DLC). Connector is located under instrument cluster, next to center console. If DRB is not operational, refer to «TESTS W/CODES - BODY CONTROL COMPUTER»(ref-10844) article in the ENGINE PERFORMANCE Section.
  2. If DRB is operational, turn ignition on. Using DRB, select body system. If DRB does not display BUS OPERATIONAL message, refer to the «TESTS W/CODES - BODY CONTROL COMPUTER»(ref-10844) article in the ENGINE PERFORMANCE Section. If BUS OPERATIONAL is displayed, go to next step.
  3. Using DRB, select body computer. If DRB displays NO RESPONSE, go to «TEST 53A»(ref-27168-S38646688292001010800000) . If DRB does not display NO RESPONSE, go to TEST 48A.

Note. A break in test sequence occurs at this point. Sequence skips from TEST 1A to TEST 48A. No test procedures have been omitted.

Verify failure or customer complaint and ensure vehicle is experiencing the problem at this time. Ensure headlights operate when headlight switch in ON position. If headlight time delay will not turn off, perform TEST 48B . If headlight time delay will not turn on, perform TEST 49A .

TEST 48B - HEADLIGHTS WILL NOT TURN OFF

  1. Ensure optical horn and headlight dimmer switch (multifunction control lever on steering column) is in low beam position and high/low switch is off. If headlights do not stay on, go to «TEST 49A»(ref-27168-S11584584202001010800000) . If headlights stay on, turn ignition off. Disconnect Body Control Module (BCM). BCM is located behind right kick panel. If headlights do not go off, go to next step. If headlights go off, replace BCM. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  2. Disconnect headlight switch. Check, clean and repair connections as necessary. If headlights do not go off, go to next step. If headlights go off, replace headlight switch. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) . If headlights do not go off, go to next step.
  3. Remove headlight time delay relay from fuse/relay block. Fuse/junction block is located behind end cover, on left side of instrument panel. Check, clean and repair connections as necessary. If headlights do not go off, repair short to battery voltage in Light Green wire headlight switch output circuit. If headlights go off, go to next step. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  4. With DRB in ohmmeter mode, check resistance of headlight time delay relay control circuit (Red/Dark Blue wire) on headlight time delay relay fuse/block connector. If resistance is less than 5 ohms, repair short to ground in Red/Dark Blue wire. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) . If resistance is more than 5 ohms, replace headlight time delay relay. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  1. Turn ignition on. Using DRB, actuate headlight time delay relay. If headlights do not toggle on and off, go to «TEST 50A»(ref-27168-S25966250842001010800000) . If headlights toggle on and off, go to next step.
  2. Using DRB, stop headlight time delay relay actuation test. Turn headlight switch on. If headlights do not come on, repair open in headlight switch output circuit (Light Green wire). Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  3. If headlights come on, use DRB to read headlight switch status while turning headlight switch off then back on. If DRB reading corresponds with headlight switch position HEADLAMPS: OFF (switch off) then HEADLAMPS: ON (switch on), replace Body Control Module (BCM). Module is located behind right kick panel. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  4. If DRB reading does not correspond to headlight switch position, access 5-amp fuse No. 5 on fuse/junction block. Fuse/junction block is located behind end cover, on left side of instrument panel. With DRB in voltmeter mode, turn headlight switch on and check voltage of headlight switch output circuit (Light Green wire) on fuse/junction block connector of 5-amp fuse No. 5. If voltage is less than 10 volts, repair open circuit in Light Green wire between headlight switch and fuse. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  5. If voltage is more than 10 volts, turn headlight switch off. Inspect 5-amp fuse No. 5. If fuse is blown, go to next step. If 5-amp fuse No. 5 is okay, turn ignition off. Disconnect BCM. Check, clean and repair connections as necessary. Turn headlight switch on. With DRB in voltmeter mode, check voltage on BCM Bone connector terminal No. 3, headlight switch fused output circuit (Red/Light Green wire). If voltage is less than 10 volts, repair open circuit in Red/Light Green wire between 5-amp fuse No. 5 and BCM. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) . If voltage is more than 10 volts, replace BCM. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  6. Disconnect Body Control Module (BCM). Check, clean and repair connections as necessary. With DRB in ohmmeter mode to check resistance on BCM Bone connector terminal No. 3, headlight switch fused output circuit (Red/Light Green wire). If resistance is less than 5 ohms, repair short to ground in Red/Light Green wire and replace fuse No. 5. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) . If resistance is more than 5 ohms, replace BCM and 5-amp fuse No. 5. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  1. Using DRB, stop headlight relay actuation test. Turn ignition off and disconnect Body Control Module (BCM). Check, clean and repair connections as necessary. Module is located behind right kick panel. Connect jumper wire between chassis ground and BCM Gray connector terminal No. 2, headlight time delay relay control circuit (Red/Dark Blue wire). If headlights come on, replace BCM. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  2. If headlights do not come on, disconnect jumper wire. Remove headlight time delay relay from fuse/junction block. Check, clean and repair connections as necessary. Fuse/junction block is located behind end cover, on left side of instrument panel. With DRB in voltmeter mode, check voltage on battery feed circuit (Red/White wire) at headlight time delay relay fuse/junction block connector No. "A". If voltage is less than 10 volts, repair open in Red/White wire circuit between relay cavity No. "A" and fuse "E" of Power Distribution Center (PDC). Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  3. If voltage is more than 10 volts, using DRB in voltmeter mode, check voltage on battery feed circuit (Red/White wire) at headlight time delay relay fuse/junction block connector No. "C". If voltage is less than 10 volts, repair open circuit in Red/White wire between relay fuse/junction block connector No. "C" and fuse "E" of PDC. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  4. If voltage is more than 10 volts, connect jumper wire between headlight time delay relay fuse/junction block connectors No. "A", battery feed circuit (Red/White wire) and No. "B", headlight switch output circuit (Light Green wire). If headlights do not come, repair open circuit in Light Green wire. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  5. If headlights come on, disconnect jumper wire. Using an external ohmmeter, check resistance between headlight time delay relay fuse/junction block connector No. "E" (Red/Dark Blue wire) and BCM Gray connector terminal No. 2 of headlamp delay relay control circuit. If resistance is more than 5 ohms, repair open circuit in Red/Dark Blue wire between relay and BCM. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) . If resistance is less than 5 ohms, replace headlight time delay relay. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .

Note. A break in test sequence occurs at this point. Sequence skips from TEST 50A to TEST 53A. No test procedures have been omitted.

TEST 53A - NO RESPONSE CONDITION

  1. Turn ignition off. Disconnect Body Control Module (BCM). Module is located behind right kick panel. Check, clean and repair connections as necessary. With DRB in voltmeter mode, check voltage on BCM Bone connector terminal No. 19, fused battery feed circuit (Pink wire). If voltage is less than 10 volts, repair open circuit in Pink wire back to fuse/junction block. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  2. If voltage is more than 10 volts, use DRB in ohmmeter mode to check resistance on BCM Bone connector terminal No. 21, ground circuit (Black wire). If resistance is more than 5 ohms, repair open circuit in ground circuit (Black wire). Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .
  3. If resistance is less than 5 ohms, check resistance on BCM Bone connector terminal No. 14, signal ground circuit (Black/Light Green wire). If resistance is more than 100 ohms, repair open in ground circuit (Black/Light Green wire). Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) . If resistance is more than 100 ohms, go to next step.
  4. Ensure DRB is connected to Data Link Connector (DLC). Using an external ohmmeter, backprobe DLC connector terminal No. 4, CCD bus (+) circuit, (Violet/Brown wire). Check resistance between DLC connector terminal No. 4 and BCM Bone connector terminal No. 8, CCD bus (+) circuit, (Violet/Brown wire). If resistance is more than 5 ohms, repair open CCD bus (+) circuit (Violet/Brown wire) between DLC and BCM Bone connector. If resistance is less than 5 ohms, go to next step.
  5. Ensure DRB is connected to Data Link Connector (DLC). Using an external ohmmeter, backprobe DLC connector terminal No. 3, Chrysler Collision Detection (CCD) bus (-) circuit, (White/Black wire). Check resistance between DLC connector terminal No. 3 and BCM Bone connector terminal No. 7, CCD bus (-) circuit, (White/Black wire). If resistance is more than 5 ohms, repair open CCD bus (-) circuit (White/Black wire) between DLC and BCM Bone connector. If resistance is less than 5 ohms, replace BCM. Perform «VERIFICATION PROCEDURE VER-1»(ref-27168-S36375529352001010800000) .

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