Toyota CH-R Service Manual: Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Front Wiper and Washer (w/ Rain Sensor)

Symptom

Suspected Area

Link

Front wipers do not operate at all

ECU-IG1 NO. 4 fuse

-

Windshield wiper switch assembly

Windshield wiper motor assembly

Windshield wiper relay assembly

No. 1 integration relay

Harness or connector

-

Front wipers do not operate in AUTO

Rain sensor tape

-

Rain sensor

Windshield wiper switch assembly

Windshield wiper relay assembly

Windshield wiper motor assembly

Harness or connector

-

When the front wiper switch is in AUTO, the rain sensor sensitivity cannot be adjusted by the controlling sensitivity setting switch

Windshield glass (Rain sensor sensing portion) is dirty

-

Windshield wiper switch assembly

Windshield wiper relay assembly

Harness or connector

-

Front wipers do not operate in MIST

Windshield wiper switch assembly

Harness or connector

-

Front wipers do not operate in LO

Windshield wiper switch assembly

Windshield wiper motor assembly

Windshield wiper relay assembly

Harness or connector

-

Front wipers do not operate in HI

Windshield wiper switch assembly

Windshield wiper motor assembly

Windshield wiper relay assembly

Harness or connector

-

Front washer motor does not operate

WASHER fuse

-

Windshield washer motor and pump assembly

Windshield wiper switch assembly

Harness or connector

-

Washer fluid does not flow

Washer fluid

-

Washer hose and nozzle

-

Front wipers do not operate when the front washer switch is on

Windshield wiper motor assembly

Windshield wiper relay assembly

Harness or connector

-

When the front wiper switch is off, the wiper blades do not stop (park) or stop (park) in the wrong position

Front wiper arm installation position

Windshield wiper switch assembly

Windshield wiper motor assembly

Windshield wiper relay assembly

Harness or connector

-

Front Wiper and Washer (w/o Rain Sensor)

Symptom

Suspected Area

Link

Front wipers do not operate at all

WIPER fuse

-

Windshield wiper switch assembly

Windshield wiper motor assembly

No. 1 Integration relay

Harness or connector

-

Front wipers do not operate in INT

Windshield wiper switch assembly

Windshield wiper motor assembly

Harness or connector

-

Front wipers do not operate in MIST

Windshield wiper switch assembly

Harness or connector

-

Front wipers do not operate in LO

Windshield wiper switch assembly

Windshield wiper motor assembly

Harness or connector

-

Front wipers do not operate in HI

Windshield wiper switch assembly

Windshield wiper motor assembly

Harness or connector

-

Front washer motor does not operate

WASHER fuse

-

Windshield washer motor and pump assembly

Windshield wiper switch assembly

Harness or connector

-

Washer fluid does not flow

Washer fluid

-

Washer hose and nozzle

-

Front wipers do not operate when the front washer switch is on

Windshield wiper motor assembly

Windshield wiper switch assembly

Harness or connector

-

When the front wiper switch is off, the wiper blades do not stop (park) or stop (park) in the wrong position

Front wiper arm installation position

Windshield wiper switch assembly

Windshield wiper motor assembly

Harness or connector

-

Rear Wiper and Washer

Symptom

Suspected Area

Link

Rear wiper does not operate at all

WIPER RR fuse

-

Windshield wiper switch assembly

Rear wiper motor assembly

Harness or connector

-

Rear wiper does not operate in INT

Windshield wiper switch assembly

Rear wiper motor assembly

Harness or connector

-

Rear wiper does not operate in ON

Windshield wiper switch assembly

Rear wiper motor assembly

Harness or connector

-

Rear washer motor does not operate

WASHER fuse

-

Windshield washer motor and pump assembly

Windshield wiper switch assembly

Harness or connector

-

Washer fluid does not flow

Washer fluid

-

Washer hose and nozzle

-

When the rear wiper switch is off, the wiper blade does not stop (park) or stops (parks) in the wrong position

Rear wiper arm installation position

Windshield wiper switch assembly

Rear wiper motor assembly

Harness or connector

-

Washer Fluid Level Warning System (for Cold Area Specification Vehicles)

Symptom

Suspected Area

Link

Washer fluid level warning message on the multi-information display does not operate

Level warning switch assembly

Meter and gauge system

Harness or connector

-

    Operation Check
    OPERATION CHECK FRONT WIPER MOTOR AND LINK ASSEMBLY INSPECTION (a) AUTO Wiper Inspection (w/ Rain Sensor) (1) Continuously apply water to the windshield glass in front of the rain sensor. (2) Turn ...

    Terminals Of Ecu
    TERMINALS OF ECU CHECK WINDSHIELD WIPER RELAY ASSEMBLY (w/ Rain Sensor) (a) Disconnect the F56 windshield wiper relay assembly connector. (1) Measure the voltage and resistance on the wire harnes ...

    Other materials:

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    Toyota CH-R Service Manual > How To Troubleshoot Ecu Controlled Systems: General Information
    GENERAL INFORMATION A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoot. However, most problem checking procedures only involve ins ...

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