DTC P0126 - Sufficient Coolant Temperature For Stable Operation -
WARNING: This page is about a different variant/trim than selected.
- DTC DETECTING CONDITION:
- Detected when two consecutive driving cycles with malfunction is occurred.
- GENERAL DESCRIPTION < Ref. to DTC P0126 - INSUFFICIENT COOLANT TEMPERATURE FOR STABLE OPERATION - , Diagnostic Trouble Code (DTC) Detecting Criteria. >
- TROUBLE SYMPTOM:
- Hard to start
- Erroneous idling
- Poor driving performance
CAUTION: After repair or replacement of malfunctioning parts, conduct Clear Memory Mode < Ref. to OPERATION , CLEAR MEMORY MODE > and INSPECTION MODE < Ref. to OPERATION , INSPECTION MODE. > - WIRING DIAGRAM:
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK ANY OTHER DTC ON DISPLAY. | Is any other DTC displayed? | Inspect the relevant DTC using "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | Go to step 2. |
| 2 CHECK ENGINE COOLANT TEMPERATURE SENSOR. Measure the resistance between terminals of engine coolant temperature sensor when the engine is cold and when the engine is warmed up. terminal No. 1 - No. 2: |
Does the resistance value change between the condition when the engine is cooled and when it is warmed up? | Go to step 3. | Replace the engine coolant temperature sensor. < Ref. to ENGINE COOLANT TEMPERATURE SENSOR . > |
3 CHECK HARNESS BETWEEN ENGINE COOLANT TEMPERATURE SENSOR AND ECM CONNECTOR.
|
Is the measured value more than 10 V? | Repair battery short circuit in harness between ECM and engine coolant temperature sensor connector. | Go to step 4. |
4 CHECK HARNESS BETWEEN ENGINE COOLANT TEMPERATURE SENSOR AND ECM CONNECTOR.
|
Is the measured value more than 10 V? | Repair battery short circuit in harness between ECM and engine coolant temperature sensor connector. | Go to step 5. |
| 5 CHECK HARNESS BETWEEN ENGINE COOLANT TEMPERATURE SENSOR AND ECM CONNECTOR. Measure voltage between engine coolant temperature sensor connector and engine ground. Connector & terminal (E8) No. 1 (+) - Engine ground (-): |
Is the measured value more than 4 V? | Go to step 6. | Repair harness and connector.
NOTE:
In this case, repair the following:
|
6 CHECK HARNESS BETWEEN ENGINE COOLANT TEMPERATURE SENSOR AND ECM CONNECTOR.
|
Is the measured value less than 5 Ω? | Contact your SOA Service Center. | Repair harness and connector.
NOTE:
In this case, repair the following:
|