Illumination Circuit [08/2016 - 08/2019]: Procedure

1. Check if the illumination for the radio receiver assembly, steering pad switch assembly, heater control switch or others (hazard switch, transmission control switch, etc.) comes on when the light control switch is turned to the head or tail position.

   Result

   Result	Proceed to
   Illumination comes on for all components except steering pad switch assembly.	A
   Illumination comes on for all components except radio receiver assembly.	B
   No illumination comes on (radio receiver assembly, hazard switch, heater control switch, etc.).	C

Result: 

B 

See step  5

Result: 

C 

GO TO LIGHTING SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - ] 

Result: 

A 

See step  2

1. Disconnect the J29 spiral cable with sensor sub-assembly connector.
2. Measure the voltage according to the value (s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J29-13 (IL+2) - Body ground	Power switch off Light control switch in tail or head position	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Remove the steering pad switch assembly.

   Refer to REMOVAL [08/2016 - 08/2019]

2. Inspect the steering pad switch assembly.

   Refer to INSPECTION [08/2016 - ]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [08/2016 - 08/2019] 

Result: 

OK 

See step  4

1. Remove the spiral cable with sensor sub-assembly.

   Refer to REMOVAL [08/2016 - 08/2019]

2. Inspect the spiral cable with sensor sub-assembly.

   Refer to INSPECTION [08/2016 - 12/2017] , or refer to INSPECTION [12/2017 - ]

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - RADIO RECEIVER ASSEMBLY, COMBINATION METER ASSEMBLY) 

Result: 

NG 

REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY. Refer to  REMOVAL [08/2016 - 08/2019] 

1. Disconnect the J50 radio receiver assembly connector.
2. Measure the voltage according to the value (s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J50-14 (ILL+) - Body ground	Power switch off Light control switch in tail or head position	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Disconnect the J50 radio receiver assembly connector.
2. Disconnect the J10 combination meter assembly connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J50-13 (ILL-) - J10-39 (ILL-)	Always	Below 1 Ω
   J50-13 (ILL-) or J10-39 (ILL-) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2015 - 03/2018]  , or refer to  PROBLEM SYMPTOMS TABLE [03/2018 - 08/2019] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR