ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT STOP LIGHT SWITCH ASSEMBLY
(a) Disconnect the A45 stop light switch assembly connector. |
|
(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A45-7 (B) - A45-2 (GND) |
Ignition switch off |
11 to 14 V |
A45-6 (B) - A45-2 (GND) |
Ignition switch on (IG) |
11 to 14 V |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A45-2 (GND) - Body ground |
Always |
Below 1 Ω |
If the result is not as specified, repair or replace the wire harness or connector.
(c) Reconnect the A45 stop light switch assembly connector. |
|
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
A45- 1 (OUT) - A45-2 (GND) |
Ignition switch off, brake pedal not depressed |
Below 1 V |
A45-1 (OUT) - A45-2 (GND) |
Ignition switch off, brake pedal depressed |
11 to 14 V |
A45-3 (L) - A45-2 (GND) |
Ignition switch off, brake pedal not depressed |
Below 1 V |
A45-3 (L) - A45-2 (GND) |
Ignition switch off, brake pedal depressed |
11 to 14 V |
A45-4 (ACC) - A45-2 (GND) |
Ignition switch off |
11 to 14 V |
A45-5 (L) - A45-2 (GND) |
Ignition switch on (IG), brake pedal not depressed |
11 to 14 V |
A45-5 (L) - A45-2 (GND) |
Ignition switch on (IG), brake pedal depressed |
Below 1 V |
If the result is not as specified, replace the stop light switch assembly.
Toyota CH-R Service Manual > Lin Communication System: Lost Communication with Power Source Control (B278C)
DESCRIPTION
This DTC is stored when LIN communication between the certification ECU (smart
key ECU assembly) and power management control ECU stops for 10 seconds or more.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
B27 ...
Toyota CH-R Service Manual > Navigation System: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the navigation system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
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