Meter / Gauge / Display

METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: Fuel Economy Meter Malfunction
- Fuel Economy Meter Malfunction

DESCRIPTION

The combination meter communicates with the ECM and skid control ECU via the CAN communication system. The combination meter calculates the current fuel consumption based on a vehicle speed signal from the skid control ECU, a fuel injection signal from the ECM.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK CAN COMMUNICATION SYSTEM

(a) Check if a 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. PERFORM ACTIVE TEST USING TECHSTREAM (FUEL CONSUMPTION METER OPERATION)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

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

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

Combination Meter:





OK:

Needle indication is normal.

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

3. READ VALUE USING TECHSTREAM (VEHICLE SPEED, INJECTION VOLUME)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus:

(1) for ABS/VSC/TRAC: Chassis / ABS/VSC/TRAC / Data List.

(2) for Engine and ECT: Powertrain / Engine and ECT / Data List.

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

ABS/VSC/TRAC





Engine and ECT





Result:





HINT
* When the Data List values of the ECUs match, an internal malfunction of the combination meter assembly is suspected.
* When the Data List values of the ECUs do not match, a signal output error of the skid control ECU or an internal malfunction of the combination meter assembly is suspected.

B -- GO TO BRAKE CONTROL SYSTEM How to Proceed With Troubleshooting

C -- GO TO SFI SYSTEM (for 2AR-FE) How to Proceed with Troubleshooting

D -- GO TO SFI SYSTEM (for 2GR-FE) How to Proceed with Troubleshooting
A -- Continue to next step.

4. REPLACE BRAKE ACTUATOR ASSEMBLY

(a) Replace the brake actuator assembly with a new or a known good one Removal.

Result:





B -- REPLACE ECM

A -- END

5. REPLACE ECM

(a) Replace the ECM with a new or a known good one Removal for 2AR-FE, Removal for 2GR-FE).

Result:





B -- REPLACE COMBINATION METER ASSEMBLY Removal

A -- END