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Home >> Infiniti >> 2003 >> Q45 >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Parking License & Tail Lamps >> Trouble Diagnoses

Trouble Diagnoses

TROUBLE DIAGNOSIS

Symptom Repair Procedure
No lamps operate (including headlamps).
  1. Check 10A fuse [No. 6, located in fuse block (J/B) NO.1]. Verify battery positive voltage is present at terminal 7 of headlamp battery saver control unit.
  2. Check lighting switch. Refer to .
  3. Check headlamp battery saver control unit. Refer to .
No parking, side marker, license and tail lamps operate, but headlamps do operate.
  1. Check 15A fuse [No. 54, located in fuse, fusible link and relay block (J/B)]. Verify battery positive voltage is present at terminals 6 and 2 of tail lamp relay.
  2. Check tail lamp relay.
  3. Check harness between headlamp battery saver control unit terminals 6 and 14 and tail lamp relay terminal 1. Check harness between tail lamp relay terminal 7 and terminals of each combination lamp.
  4. Check lighting switch. Refer to .
  5. Check harness between lighting switch terminal 11 and headlamp battery saver control unit terminals 5 and 13. Check harness between lighting switch terminal 5 and ground.
  6. Check headlamp battery saver control unit. Refer to .
Battery saver control does not operate properly.
  1. Check RAP signal. Verify 12 positive voltage from BCM is present at terminal 10 of headlamp battery saver control unit:
    • Within 45 seconds after ignition switch turned off.
    • Front door is opened or more than 45 seconds after ignition switch is turned off.
  2. Check the following.
    • Harness between BCM and front door switch (driver side) or front door switch (passenger side) for open or short circuit.
    • Front door switch (driver side) or front door switch (passenger side) ground circuit.
    • Front door switch (driver side) or front door switch (passenger side).
  3. Check the following.
    • Harness between headlamp battery saver control unit terminals 5 or 13 and lighting switch terminal 11 for open or short circuit.
    • Harness between lighting switch terminal 5 and ground.
    • Lighting switch. Refer to .
  4. Check headlamp battery saver control unit. Refer to .
  5. Check BCM. Refer to .