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Trouble Diagnoses

TURN SIGNAL AND HAZARD WARNING LAMPS TROUBLE DIAGNOSES

Symptom Possible cause Repair order
Turn signal and hazard warning lamps do not operate.
  1. Hazard switch
  2. Combination flasher unit
  3. Open in combination flasher unit circuit
  1. Check hazard switch.
  2. Refer to COMBINATION FLASHER UNIT CHECK  .
  3. Check wiring to combination flasher unit for open circuit.
Turn signal lamps do not operate but hazard warning lamps operate.
  1. 7.5A fuse
  2. Hazard switch
  3. Combination switch (turn signal)
  4. Open in combination switch (turn signal) circuit
  1. Check 7.5A fuse [No. 12, located in fuse block (J/B)]. Turn ignition switch ON and verify battery positive voltage is present at terminal 2 of hazard switch.
  2. Check hazard switch.
  3. Check combination switch (turn signal).
  4. Check the wire between combination flasher unit terminal 3 and combination switch (turn signal) terminal 1 for open circuit.
Hazard warning lamps do not operate but fog lamps (turn signal) operate.
  1. 15A fuse
  2. Hazard switch
  3. Open in hazard switch circuit
  1. Check 15A fuse [No. 20, located in fuse block (J/B)]. Verify battery positive voltage is present at terminal 3 of hazard switch.
  2. Check hazard switch.
  3. Check the wire between combination flasher unit terminal 3 and hazard switch terminal 4 for open circuit.
Front fog lamp (turn signal) LH or RH does not operate.
  1. Bulb
  2. Grounds E13 and E41
  3. Open in front fog lamp (turn signal) circuit
  1. Check bulb.
  2. Check grounds E13 and E41.
  3. Check harness between front fog lamp (turn signal) and combination switch.
Rear combination lamp LH does not operate.
  1. Bulb.
  2. Grounds B11, B22 and D210
  3. Open in rear combination lamp LH circuit
  1. Check bulb.
  2. Check grounds B11, B22 and D210.
  3. Check harness between rear combination lamp LH and hazard switch.
Rear combination lamp RH does not operate.
  1. Bulb
  2. Grounds B55 and B75
  3. Open in rear combination lamp RH circuit
  1. Check bulb.
  2. Check grounds B55 and B75.
  3. Check harness between rear combination lamp RH and hazard switch.
LH and RH turn indicators do not operate.
  1. Ground
  1. Check grounds M4, M66 and M147.
LH or RH turn indicator does not operate.
  1. Bulb
  2. Open in turn indicator circuit
  1. Check bulb in combination meter.
  2. Check harness between combination meter and hazard switch.
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