Taillight Relay Circuit

LIGHTING: LIGHTING SYSTEM: Taillight Relay Circuit

Taillight Relay Circuit

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK LIGHTS
(a) Check the condition A, B or C, when taillight does not light up.
Result:





C -- INSPECT REAR COMBINATION LIGHT ASSEMBLY LH
B -- INSPECT LH HEADLIGHT ASSEMBLY (PARKING LIGHT)
A -- Continue to next step.

2. INSPECT TAILLIGHT RELAY




(a) Inspect taillight relay continuity.
Standard:





NG -- REPLACE TAILLIGHT RELAY
OK -- Continue to next step.

3. INSPECT HEADLIGHT DIMMER SWITCH ASSEMBLY




(a) Inspect light control switch continuity.
(1) Check that there is continuity between terminals at each switch position as shown in the chart.
Standard:





NG -- REPLACE HEADLIGHT DIMMER SWITCH ASSEMBLY
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (BETWEEN BODY ECU AND HEADLIGHT DIMMER SWITCH ASSEMBLY)
(a) Check the continuity between terminal B6-8 (TAIL) of the multiplex network body ECU and the headlight dimmer switch assembly.
Standard:
There is continuity

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MULTIPLEX NETWORK BODY ECU
5. INSPECT LH HEADLIGHT ASSEMBLY (PARKING LIGHT)
(a) Check that there is a continuity between terminals of headlight assembly.
Standard:
ON
Continuity
OFF
No continuity
OK -- REPLACE LH HEADLIGHT ASSEMBLY

NG -- Continue to next step.

6. CHECK HARNESS AND CONNECTOR (BETWEEN DRIVER SIDE JUNCTION BLOCK AND LH HEADLIGHT ASSEMBLY)
(a) Check the continuity between the terminal parking light assembly and driver side junction block.
Standard:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK
7. INSPECT REAR COMBINATION LIGHT ASSEMBLY LH
(a) Check that there is a continuity between terminals of rear combination light assembly.
Standard:
ON
Continuity
OFF
No continuity
OK -- REPLACE REAR COMBINATION LIGHT ASSEMBLY LH

NG -- Continue to next step.

8. CHECK HARNESS AND CONNECTOR (BETWEEN DRIVER SIDE J/B AND REAR COMBINATION LIGHT ASSEMBLY)
(a) Check the continuity terminals 4 of the combination light and 1F-13 of the driver side junction block.
Standard:
There is continuity

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE DRIVER SIDE JUNCTION BLOCK