Toyota CH-R Service Manual: On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT RAIN SENSOR

(a) Disconnect the R1 rain sensor connector.

*a	Front view of wire harness connector (to Rain Sensor)

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
R1-4 (SIG) - R1-2 (ES)	Ignition switch ON	11 to 14 V

Standard Resistance:

Tester Connection	Condition	Specified Condition
R1-2 (ES) - Body ground	Always	Below 1 Ω

If the result is not as specified, repair or replace the harness or connector.

(d) Reconnect the R1 rain sensor connector.

*a	Component with harness connected (Rain Sensor)

(e) Connect an oscilloscope to the rain sensor connector.

(f) Check for pulses.

OK:

Tester Connection	Condition	Specified Condition
3 (MPX) - 2 (ES)	Ignition switch ON	Pulse generation

If the result is not as specified, replace the rain sensor.

COMPONENTS ILLUSTRATION *1 RAIN SENSOR *2 RAIN SENSOR COVER *3 RAIN SENSOR TAPE - - ...

REMOVAL PROCEDURE 1. REMOVE RAIN SENSOR COVER (a) Release the stopper by pulling it out as shown in the illustration. *a Stopper Release ...

Toyota CH-R Service Manual > Smart Key System(for Entry Function): Driver Side Door Entry Unlock Function does not Operate
DESCRIPTION If the entry unlock function does not operate for the driver door only, but the entry lock function operates, the request code is being transmitted properly from the driver door. In this case, there may be a problem related to the unlock sensor (connection between the certificatio ...

Toyota CH-R Service Manual > Wireless Door Lock Control System(w/o Smart Key System): No Answer-Back
DESCRIPTION In some cases, wireless door lock control functions are normal but the hazard warning light and wireless door lock buzzer answer-back functions*1 do not operate. In such cases, hazard warning light and wireless door lock buzzer*1 signal outputs from the main body ECU (multiplex ne ...

Toyota C-HR (AX20) 2023-2026 Owner's Manual