DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly 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 assembly.
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 assembly, also the radio and display receiver assembly itself will not function.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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.
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PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (STEERING PAD SWITCH SIGNAL) |
(a) Disconnect the F129 radio and display receiver assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F129-21 (SW1) - F129-24 (SWG) |
No switch pushed |
95 to 105 kΩ |
Seek+ switch pushed |
Below 2.5 Ω |
|
Seek- switch pushed |
313 to 345 Ω |
|
Volume+ switch pushed |
950 to 1050 Ω |
|
Volume- switch pushed |
2955 to 3265 Ω |
|
F129-22 (SW2) - F129-24 (SWG) |
No switch pushed |
95 to 105 kΩ |
MODE switch pushed |
Below 2.5 Ω |
|
On hook switch pushed |
313 to 345 Ω |
|
Off hook switch pushed |
950 to 1050 Ω |
|
Voice switch pushed |
2955 to 3265 Ω |
OK |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT STEERING PAD SWITCH ASSEMBLY |
(a) Remove the steering pad switch assembly.
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(b) Inspect the steering pad switch assembly.
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NG |
REPLACE STEERING PAD SWITCH ASSEMBLY |
|
3. |
INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
(a) Remove the spiral cable with sensor sub-assembly.
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(b) Inspect the spiral cable with sensor sub-assembly.
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NOTICE:
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY OR BODY GROUND) |
NG |
REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY |
Toyota CH-R Owners Manual > For safe use: For safe driving
For safe driving, adjust the seat and mirror to an appropriate position
before driving.
Correct driving posture
Adjust the angle of the seatback so that you are sitting straight up and
so that you do not have to lean forward to steer.
Adjust the seat so that you can depress the pedals f ...
Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Lost Communication with Meter (B1324)
DESCRIPTION
This DTC is stored when a communication error occurs between the radio and display
receiver assembly and combination meter assembly.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
B1324
Lost Communic ...