DESCRIPTION
Power is supplied to the navigation ECU sub-assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.
WIRING DIAGRAM
INSPECTION PROCEDURE
Note
The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System Click here.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
CHECK ILLUMINATION
Check if the illumination for the radio and display 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
|
B |
CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL) Click here |
C |
GO TO METER / GAUGE SYSTEM Click here |
D |
GO TO LIGHTING SYSTEM Click here |
A |
CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)
Disconnect the spiral cable with sensor sub-assembly connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT STEERING PAD SWITCH ASSEMBLY
Disconnect the steering pad switch assembly connector.
Connect a auxiliary battery positive (+) lead to terminal IL+2 and a negative (-) lead to terminal -DP of the steering pad switch assembly connector.
Check if the illumination for the steering pad switch assembly comes on.
OK |
---|
Illumination for the steering pad switch assembly comes on. |
*a | Component without harness connected (Steering Pad Switch Assembly) |
- | - |
NG |
REPLACE STEERING PAD SWITCH ASSEMBLY Click here |
OK |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY
Disconnect the steering pad switch assembly.
Disconnect the spiral cable with sensor sub-assembly.
*a | Component without harness connected (Spiral Cable with Sensor Sub-assembly) |
*b | Steering Pad Switch Assembly Side |
*c | Vehicle Side |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
After setting the spiral cable with sensor sub-assembly to the center position, rotate the spiral cable with sensor sub-assembly 2.5 times clockwise. Then while rotating the spiral cable with sensor sub-assembly 5 times counterclockwise, measure the resistance as shown in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
Note
Press and hold the lock located in the center of the spiral cable with sensor sub-assembly to rotate the spiral cable with sensor sub-assembly.
The spiral cable with sensor sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable with sensor sub-assembly may prevent the airbag from deploying. Refer to the pages shown in the brackets.
As the spiral cable with sensor sub-assembly may break, do not rotate the spiral cable with sensor sub-assembly more than the specified amount.
NG |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here |
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - BODY GROUND)
CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)
Disconnect the navigation ECU sub-assembly connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)
Disconnect the navigation ECU sub-assembly connector.
Disconnect the combination meter assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here