Exhaust Heat Recirculation System Circuit: Procedure

1. Disconnect the engine coolant temperature sensor (for exhaust heat recirculation system) connector.
2. Disconnect the No. 3 meter circuit plate connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   G2-2 (TWS3) - L27-16 (TWS3)	Always	Below 1 Ω
   G2-1 (E2) - L27-9 (E2)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Condition	Condition	Specified Condition
   G2-2 (TWS3) or L27-16 (TWS3) - Body ground	Always	10 kΩ or higher

4. Reconnect the No. 3 meter circuit plate connector.
5. Reconnect the engine coolant temperature sensor (for exhaust heat recirculation system) connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - NO. 3 METER CIRCUIT PLATE (COMBINATION METER)) 

OK: Go to next step 

1. Inspect the engine coolant temperature sensor (for exhaust heat recirculation system). Refer to INSPECTION .

NG → See step   3 

OK → See step   4