Engine Coolant Temperature Receiver Gauge Malfunction

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

Engine Coolant Temperature Receiver Gauge Malfunction

DESCRIPTION

The ECM sends engine coolant temperature sensor signals to the combination meter assembly via CAN communication. Then the combination meter assembly indicates the engine coolant temperature.

WIRING DIAGRAM





INSPECTION PROCEDURE
HINT:
- If DTC U0100 has been stored, troubleshoot the CAN communication system first.
- If there is an open or short in the engine coolant temperature sensor circuit, an SFI system DTC is output. If output, perform troubleshooting on the SFI system.

PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER OR TECHSTREAM (COOLANT TEMP)
(a) Connect an intelligent tester or a Techstream to the DLC3.
(b) Turn the ignition switch on (IG) and turn the tester on.
(c) Operate the intelligent tester or Techstream according to the display and select "ACTIVE TEST" or "Active Test" Meter / Gauge System.
(1) Intelligent tester
Body / Combination Meter / ACTIVE TEST::






(2) Techstream
Body Electrical / Combination Meter / Active Test::






OK:
Value selected during "ACTIVE TEST" or "Active Test" is displayed.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- Continue to next step.
2. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (COOLANT TEMP)
(a) Connect an intelligent tester or a Techstream to the DLC3.
(b) Turn the ignition switch on (IG) and the tester on.
(c) Operate the intelligent tester or Techstream according to the display and select "DATA LIST" or "Data List" Meter / Gauge System.
(1) Intelligent tester
Body / Combination Meter / DATA LIST::






(2) Techstream
Body Electrical / Combination meter / Data List::






OK:
Vehicle's coolant temperature and tester value are the same.
NG -- REPLACE COMBINATION METER ASSEMBLY
OK -- GO TO SFI SYSTEM