Toyota CH-R Service Manual: Entire Combination Meter does not Operate

Toyota CH-R Service Manual / Meter / Gauge / Display / Meter / Gauge System / Entire Combination Meter does not Operate

DESCRIPTION

This circuit is the power source circuit for the combination meter assembly. This circuit provides two types of power sources; one is a constant power source, and the other is an IG power source.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses of circuits related to this system before performing the following procedure.
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.	CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY CIRCUIT)

(a) Disconnect the F4 combination meter assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
F4-21 (ET) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
F4-39 (IG+) - Body ground	Ignition switch off	Below 1 V
F4-39 (IG+) - Body ground	Ignition switch ON	11 to 14 V
F4-40 (B) - Body ground	Always	11 to 14 V

REPLACE COMBINATION METER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Lost Communication with ECM / PCM "A" (U0100,U0129,U0131,U0142,U0151,U0182,U0235,U023A)

DESCRIPTION The combination meter assembly communicates with the ECM, brake actuator assembly (skid control ECU), power steering ECU assembly, main body ECU (multiplex network body ECU), airbag s ...

Speedometer Malfunction

DESCRIPTION The combination meter assembly receives vehicle speed signals from the skid control ECU (brake actuator assembly) via CAN communication. The speed sensor detects the wheel speed and s ...

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