LIGHTING SYSTEM - Troubleshooting
T-75prose procedureUnverifiedU.S. spec only.
Troubleshooting
IMPORTANT
Symptom: No lights illuminate (taillights, side marker lights, and license plate lights). (U.S. spec.)
No lights illuminate — U.S. spec
- 11. Check TAIL 15A. 2. If the fuse is burned, replace it. Check and, if necessary, repair the wiring harness. 3. If the fuses are OK, go to Step 2.
05U0TX-315 - 21. Turn the headlight switch ON. 2. Measure the voltage at the following terminal wires of the TNS relay connector.
05U0TX-316 - 31. Check the bulbs of the each light. 2. If the bulb is burned, replace the bulb. 3. If the bulbs are OK, repair wiring harness between the TNS relay and the body ground of each light.
05U0TX-317 - 41. Disconnect the negative battery cable. 2. Remove the knee protector. 3. Disconnect the combination switch connector. 4. Check continuity between the following terminals of the combination switch.
05U0TX-318 - 5If not as specified, replace the combination switch.
- 6If correct, repair the wiring harness. (TNS relay — combination switch)
Step 2 — TNS relay connector voltage check
(W/L)
Voltage12V
ActionGo to Step 3
(W/L)
Voltage0V
ActionNext check wire (LG)
(LG)
Voltage12V
ActionGo to Step 4
(LG)
Voltage0V
ActionNext check wire (W/R: Terminal a)
(W/R) Terminal a
Voltage12V
ActionNext check wire (W/R: Terminal b)
(W/R) Terminal a
Voltage0V
ActionRepair wire (W/R) (TAIL 15A fuse — TNS relay)
(W/R) Terminal b
Voltage12V
ActionReplace TNS relay
(W/R) Terminal b
Voltage0V
ActionRepair wire (W/R) (TAIL 15A fuse — TNS relay)
Step 4 — Combination switch continuity
Headlight — Low beam
EO
HLO
HU
TNSO
BAO
B
Headlight — High beam
EO
HL
HUO
TNSO
BAO
B
Passing
EO
HL
HUO
TNS
BA
BO
Taillights, Parking
E
HL
HU
TNSO
BAO
B
NOTE
O: Indicates continuity