Engine Coolant Temperature Gauge Malfunction

METER: METER / GAUGE SYSTEM: Engine Coolant Temperature Gauge Malfunction

Engine Coolant Temperature Gauge Malfunction

DESCRIPTION

The combination meter assembly controls the engine coolant temperature gauge in accordance with engine coolant temperature signals from the ECM.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (COOLANT TEMP)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Data List.
(e) According to the display on the tester, read the Data List.

Engine and ECT

OK:
Coolant temperature displayed on the tester is between 80°C (176°F) and 100°C (212°F) after warming up.
NG -- GO TO SFI SYSTEM
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
(a) Disconnect the E13 combination meter connector.
(b) Disconnect the E46 ECM connector.

(d) Reconnect the ECM connector.
(e) Reconnect the combination meter connector.
NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE COMBINATION METER ASSEMBLY