P1816

DTC P1816

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

NOTE:

Check that the following condition is satisfied when using this procedure.

- Battery voltage > 10.5 V

1) Push engine switch to change ignition mode to "ON", and leave ignition mode in "ON" for 10 sec.

DTC Troubleshooting

1.
Was "CVT System Check" performed?
YES -
Go to Step 2.
NO -
Go to CVT System Check CVT System Check.

2. Stepper motor drive circuit check

Confirm that ignition mode of keyless push start system is in "OFF".
Disconnect "C142", "E19" and "E20" connectors.
Check for proper terminal connection to "C142", "E19" and "E20" connectors.
If connections are OK, check the following points.
- Resistance of "A1", "A2", "A3" and "A4" circuits: less than 1 ohms
- Resistance of "A1", "A2", "A3" and "A4" circuits between "C142" connector and ground: infinity
- Resistance between each of "A1", "A2", "A3" and "A4" circuit terminals and each terminal at "C142" connector: infinity
- Voltage of "A1", "A2", "A3" and "A4" circuits: 0 - 1 V (with ignition mode of keyless push start system in "ON")

Are they in good condition?
YES -
Go to Step 3.
NO -
Repair or replace defective wire harness.

3. Stepper motor check

Push engine switch to change ignition mode to "OFF".
Disconnect "C142" connector (1).
Check for proper terminal connection to "C142" connector.
Check resistance of stepper motor circuit as follows.

Stepper motor resistance:
Between terminals "1" and "15" of solenoid connector: Approx. 30 ohms at 20 °C (68 °F)
Between terminals "13" and "14" of solenoid connector: Approx. 30 ohms at 20 °C (68 °F)
Between terminal "1" of solenoid connector and transaxle: Approx. 15 ohms at 20 °C (68 °F)
Between terminal "15" of solenoid connector and transaxle: Approx. 15 ohms at 20 °C (68 °F)
Between terminal "13" of solenoid connector and transaxle: Approx. 15 ohms at 20 °C (68 °F)
Between terminal "14" of solenoid connector and transaxle: Approx. 15 ohms at 20 °C (68 °F)





Are they in good condition?
YES -
Substitute a known-good TCM and recheck DTC. Service and Repair
NO -
Replace stepper motor (valve body assembly). Service and Repair