Toyota CH-R Service Manual: Steering Pad Switch Circuit

DESCRIPTION

The combination meter assembly and steering pad switch assembly are connected via direct line. The main display and multi-information display in the combination meter assembly are operated using the switches of the steering pad switch assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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.

INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Remove the steering pad switch assembly.

Click here

(b) Inspect the steering pad switch assembly.

Click here

NG

REPLACE STEERING PAD SWITCH ASSEMBLY

OK

2.

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.

Click here

NG

REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

OK

3.

CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - COMBINATION METER ASSEMBLY)

(a) Disconnect the F4 combination meter assembly connector.

(b) Disconnect the F29 spiral cable with sensor sub-assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F4-28 (MSM+) - F29-10 (+DP)

Always

Below 1 Ω

F4-33 (MSSL) - F29-11 (+DP2)

Always

Below 1 Ω

F29-3 (EAU) - Body ground

Always

Below 1 Ω

F4-28 (MSM+) - Body ground

Always

10 kΩ or higher

F4-33 (MSSL) - Body ground

Always

10 kΩ or higher

OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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