B1504

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: B1504: Lost Communication with Steering SW
B1504 - Lost Communication with Steering SW

DESCRIPTION

The combination meter assembly (No. 3 meter circuit plate) communicates with the multi-information switch (steering pad switch assembly) via a direct line. If the combination meter assembly (No. 3 meter circuit plate) detects a communication malfunction, it stores this DTC.

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT
Before starting the following inspection, confirm the multi-information switch (steering pad switch assembly) setting.

PROCEDURE

1. READ VALUE USING TECHSTREAM (MULTI DISPLAY SELECT SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Data List.

(e) Check the values by referring to the table below.

Combination Meter

OK:

Steering pad switch assembly (multi-information switch) condition displayed on the Techstream changes with the actual switch operation.

NG -- CHECK SPIRAL CABLE

OK -- REPLACE COMBINATION METER ASSEMBLY (NO. 3 METER CIRCUIT PLATE) Disassembly

2. CHECK SPIRAL CABLE

(a) Check the spiral cable Testing and Inspection.

NG -- REPLACE SPIRAL CABLE Removal
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (NO. 3 METER CIRCUIT PLATE - STEERING PAD SWITCH ASSEMBLY)

(a) Disconnect the L27 and z9 connectors.

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

Standard Voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. REPLACE MULTI-INFORMATION SWITCH (STEERING PAD SWITCH ASSEMBLY)

(a) Replace the multi-information switch (steering pad switch assembly) with a new or a known good one Removal.

OK:

The operation of the combination meter assembly (No. 3 meter circuit plate) returns to normal.

NG -- REPLACE COMBINATION METER ASSEMBLY (NO. 3 METER CIRCUIT PLATE) Disassembly

OK -- END