DESCRIPTION
This circuit sends an operation signal from the steering pad switch to the radio and display receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using the steering pad switch.
If there is a short in the circuit, the same condition as when a switch is continuously depressed occurs.
Therefore, the radio and display receiver assembly cannot be operated using the steering pad switch, and also the radio and display receiver assembly itself cannot function.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
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.
PROCEDURE
CHECK HARNESS AND CONNECTOR (STEERING PAD SWITCH SIGNAL)
Disconnect the L35 radio and display receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here |
NG |
INSPECT STEERING PAD SWITCH LH
Remove the steering pad switch LH Click here.
Measure the resistance according to the value(s) in the table below.
*a | Component without harness connected (Steering Pad Switch LH) |
*b | Volume+ |
*c | Seek+ | *d | MODE |
*e | Volume- | *f | Seek- |
*g | Voice | *h | On hook |
*i | Off hook | - | - |
Standard Resistance | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPLACE STEERING PAD SWITCH LH Click here |
OK |
INSPECT STEERING PAD SWITCH LH
Remove the steering pad switch RH Click here.
Measure the resistance according to the value(s) in the table below.
*a | Component without harness connected (Steering Pad Switch RH) |
- | - |
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
NG |
REPLACE STEERING PAD SWITCH RH Click here |
OK |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY
Remove the spiral cable with sensor sub-assembly Click here.
Measure the resistance according to the value(s) in the table below.
*a | Component without harness connected (Spiral Cable with Sensor Sub-assembly) |
*b | Steering Pad Switch Side |
*c | Vehicle Side |
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 according to the value(s) 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.
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.
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY, BODY GROUND) |
NG |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY Click here |