[Previous][Next]
Inspection Procedure 2: One of the taillights does not illuminate.
 
 
 
 
 
 
TECHNICAL DESCRIPTION (COMMENT)
If one of the taillights does not Illuminate, the wiring harness, connector(s), rear combination light unit or liftgate light unit may have a problem, or the fuse may be burned out.
 
 
TROUBLESHOOTING HINTS
  • Malfunction of rear combination light unit
  • Malfunction of liftgate light unit
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
DIAGNOSIS
Required Special Tools:
  • MB992006: Extra fine probe
  • MB991223: Harness set
STEP 1. Connector check
  • Rear combination light connector D-19 (taillight/rear side marker light: LH)
  • Rear combination light connector D-13 (taillight/rear side marker light: RH)
  • Liftgate light connector G-27 (taillight: LH)
  • Liftgate light connector G-26 (taillight: RH)
Is connector in good condition?
Go to Step 2.
Repair or replace the damaged component(s). Refer to GROUP 00E, Harness Connector Inspection .
 
STEP 2. Resistance measurement at rear combination light connector D-19 (taillight/rear side-marker light: LH), rear combination light connector D-13 (taillight/rear side-marker light: RH), liftgate light connector G-27 (taillight: LH) or liftgate light connector G-26 (taillight: RH).
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the resistance between the connector of light which does not illuminate and body ground.
  • Measure the resistance between rear combination light connector D-19 (taillight/rear side-marker light: LH) or D-13 (taillight/rear side-marker light: RH) (terminal 3) and body ground.
  • Measure the resistance between liftgate light connector G-27 (taillight: LH) or G-26 (taillight: RH) (terminal 4) and body ground.
OK: The measured value should be continuity exists (2 ohms or less).
Does the measured resistance value correspond with this range?
Go to Step 4.
Go to Step 3.
 
STEP 3. Check the wiring harness.
Check the ground line for open circuit.
  • Check the wiring harness between rear combination light (taillight/rear side-marker light: LH) connector D-19 (terminal 3) and the body ground.
  • Check the wiring harness between rear combination light (taillight/rear side-marker light: RH) connector D-13 (terminal 3) and the body ground.
  • Check the wiring harness between liftgate light (taillight: LH) connector G-27 (terminal 4) and the body ground.
    noteAlso check intermediate connector G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in GROUP 00E, Harness Connector Inspection .
  • Check the wiring harness between liftgate light (taillight: RH) connector G-26 (terminal 4) and the body ground.
    noteAlso check intermediate connector G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in GROUP 00E, Harness Connector Inspection .
Is the wiring harness in good condition?
Go to Step 6.
The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
 
STEP 4. Check ETACS-ECU connectors C-413 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Is ETACS-ECU connectors C-413 in good condition?
Go to Step 5.
Repair or replace the damaged component(s). Refer to GROUP 00E, Harness Connector Inspection .
 
STEP 5. Check wiring harness.
Check the power supply line for open circuit or short circuit.
  • Check the wiring harness between rear combination light (taillight/rear side-marker light: LH) connector D-19 (terminal 4) and ETACS-ECU connector C-413 (terminal 10).
  • Check the wiring harness between rear combination light (taillight/rear side-marker light: RH) connector D-13 (terminal 4) and ETACS-ECU connector C-413 (terminal 13).
  • Check the wiring harness between liftgate light (taillight: LH) connector G-27 (terminal 1) and ETACS-ECU connector C-413 (terminal 10).
    noteAlso check intermediate connector G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in GROUP 00E, Harness Connector Inspection .
  • Check the wiring harness between liftgate light (taillight: RH) connector G-26 (terminal 1) and ETACS-ECU connector C-413 (terminal 13).
    noteAlso check intermediate connector G-23 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector G-23 is damaged, repair or replace the connector as described in GROUP 00E, Harness Connector Inspection .
Is the wiring harness in good condition?
Go to Step 6.
The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary.
 
STEP 6. Retest the system.
Check that the taillight or rear side-marker light illuminate normally.
Does the taillight or rear side-marker light work normally?
(The light illuminate normally.) : The trouble can be an intermittent malfunction (Refer to GROUP 00, How to use Troubleshooting/inspection Service Points, How to Cope with Intermittent Malfunction ).
<When the rear combination light (taillight/rear side-marker light) do not illuminate> : Replace the rear combination light unit.unit.
<When the liftgate light (taillight) does not illuminate> : Replace the liftgate light unit.