DTC Diagnosis Procedure
- CHECK DTC PRIORITY
If DTC P26A5 is displayed with other DTC, first perform the confirmation procedure (trouble diagnosis) for other DTC.
Is applicable DTC detected?
YES
Perform diagnosis of applicable. Refer to DTC Index .
NO
GO TO 2.
- CHECK MULTI-WAY CONTROL VALVE POSITION SENSOR POWER SUPPLY
- Turn ignition switch OFF.
- Disconnect multi-way control valve harness connector.
- Turn ignition switch ON.
- Check the voltage between multi-way control valve harness connector and ground.
+
-
Voltage
(Approx.)
Multi-way control valve
Connector
Terminal
F117
5
Ground
5 V
Is the inspection result normal?
YES
GO TO 5.
NO
GO TO 3.
- CHECK MULTI-WAY CONTROL VALVE POSITION SENSOR POWER SUPPLY CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between multi-way control valve harness connector and ECM harness connector.
Multi-way control valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
F117
5
F142
136
Existed
- Also check harness for short to power and short to ground.
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 5.
NO
Repair or replace error-detected parts.
- CHECK MULTI-WAY CONTROL VALVE POSITION SENSOR GROUND CIRCUIT
- Turn ignition switch OFF.
- Disconnect ECM harness connector.
- Check the continuity between multi-way control valve harness connector and ECM harness connector.
Multi-way control valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
F117
3
F142
125
Existed
- Also check harness for short to power.
Is the inspection result normal?
YES
GO TO 6.
NO
Repair or replace error-detected parts.
- CHECK MULTI-WAY CONTROL VALVE POSITION SENSOR INPUT SIGNAL CIRCUIT
- Check the continuity between multi-way control valve harness connector and ECM harness connector.
Multi-way control valve
ECM
Continuity
Connector
Terminal
Connector
Terminal
F117
4
F142
110
Existed
- Also check harness for short to power and short to ground.
Is the inspection result normal?
YES
GO TO 7.
NO
Repair or replace error-detected parts.
- Check the continuity between multi-way control valve harness connector and ECM harness connector.
- CHECK MULTI-WAY CONTROL VALVE POSITION SENSOR
Check the multi-way control valve position sensor. Refer to Component Inspection .
Is the inspection result normal?
YES
INSPECTION END
NO
Replace multi-way control valve. Refer to MULTI-WAY CONTROL VALVE : Removal & Installation .