Meter / Gauge System Engine Coolant Temperature Gauge Malfunction

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK WIRE HARNESS (METER - ECM)

WIRING DIAGRAM

INSPECTION PROCEDURE

1. Check for DTCs of the SFI system (1GR-FE, 2TR-FE) or ECD system (1KD-FTV, 5L-E).
   

   Result:

   Result	Proceed to
   DTC is not output	A
   DTC is output (1GR-FE, 2TR-FE)	B
   DTC is output (1KD-FTV, 5L-E)	C

1. Disconnect the C10 meter connector.
   

2. Disconnect the E13*1, E9*2, E4*3 or E23*4 ECM connector.
   

3. Measure the resistance of the wire harness side connectors.
   

   Standard resistance:

   for 1GR-FE

   Tester Connection	Specified Condition
   C10-4 - E13-14 (THWO)	Below 1 Ω
   C10-4 - Body ground	10 kΩ or higher

   for 2TR-FE:

   Tester Connection	Specified Condition
   C10-4 - E9-14 (THWO)	Below 1 Ω
   C10-4 - Body ground	10 kΩ or higher

   for 1KD-FTV:

   Tester Connection	Specified Condition
   C10-4 - E4-2 (THWO)	Below 1 Ω
   C10-4 - Body ground	10 kΩ or higher

   for 5L-E:

   Tester Connection	Specified Condition
   C10-4 - E23-8 (THWO)	Below 1 Ω
   C10-4 - Body ground	10 kΩ or higher