Engine Coolant Temperature Receiver Gauge Malfunction

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Engine Coolant Temperature Receiver Gauge Malfunction
- Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION

In this circuit, the meter CPU receives engine coolant temperature signals from the ECM using the CAN and BEAN lines. The meter CPU displays engine coolant temperature that is calculated based on the data received from the ECM.

WIRING DIAGRAM

1. for 2GR-FSE





2. for 4GR-FSE





INSPECTION PROCEDURE

HINT
If there is an open or short in the engine coolant temperature sensor circuit, the ECM will store the DTCs. Perform troubleshooting of the SFI system SFI System for 4GR-FSE, SFI System for 2GR-FSE).

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication DTC is output Diagnosis System.

Result:





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

2. CHECK MULTIPLEX COMMUNICATION SYSTEM

(a) Check if Multiplex communication DTC is output Diagnosis System.

Result:





B -- GO TO MULTIPLEX COMMUNICATION SYSTEM How To Proceed With Troubleshooting
A -- Continue to next step.

3. PERFORM ACTIVE TEST USING TECHSTREAM (WATER TEMPERATURE METER OPERATION)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

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

Combination Meter





OK:

Engine coolant temperature receiver gauge indication is normal.

NG -- REPLACE COMBINATION METER ASSEMBLY Removal
OK -- Continue to next step.

4. READ VALUE USING TECHSTREAM (COOLANT TEMP)

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Data List.

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

Engine and ECT





Result:





B -- GO TO SFI SYSTEM (for 4GR-FSE) SFI System

C -- GO TO SFI SYSTEM (for 2GR-FSE) SFI System
A -- Continue to next step.

5. REPLACE COMBINATION METER ASSEMBLY

(a) Replace the combination meter assembly with a new or a known good one Removal.

OK:

The operation of the combination meter assembly returns to normal.

Result:





B -- REPLACE ECM (for 4GR-FSE) Removal

C -- REPLACE ECM (for 2GR-FSE) Removal

A -- END