DTC P26CA-14: Engine Coolant Pump Circuit Short to Ground or Open [06/2020 - 08/2020]: Procedure
WARNING: This page is about a different variant/trim than selected.
- INSPECT ECM (INTERNAL CIRCUIT)
*a Front view of wire harness connector
(to Engine Water Pump Assembly (Water Inlet Housing))- Disconnect the engine water pump assembly (water inlet housing) connector.
- Turn the ignition switch to ON.
- Measure the resistance according to the value(s) in the table below.
Standard
Tester Connection Condition Specified Condition C23-2 (SWP) - Body ground Ignition switch ON Resistance fluctuates* HINT:
- *: When the connector of the engine water pump assembly is disconnected, the ECM will enter fail-safe mode. When the ECM is in fail-safe mode, a continuous duty signal will be output and the resistance will fluctuate as the transistor inside the ECM is turned on an off.
- If the resistance fluctuates while the ECM is in fail-safe mode after the connector of the engine water pump assembly is disconnected, it can be determined that the transistor is operating.
- If the transistor does not operate, the ECM may be malfunctioning.
- If the resistance fluctuates after turning the ignition switch to ON, it can be determined that the ECM is in fail-safe mode.
Result
Proceed to OK NG
Result:
NG
REPLACE ECM
Refer to REMOVAL [02/2019 - 08/2020]
Result:
OK
See step 2
- CHECK HARNESS AND CONNECTOR (ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING) - ECM)
- Disconnect the engine water pump assembly (water inlet housing) connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition C23-2 (SWP) - C45-50 (WPO) Always Below 1 Ω C23-2 (SWP) or C45-50 (WPO) - Body ground Always 10 kΩ or higher Result
Proceed to OK NG
Result:
OK
REPLACE ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING)
Refer to REMOVAL [10/2019 - 08/2020]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR