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
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 at 20 C (68 F)
Between terminals "13" and "14" of solenoid connector: Approx. 30 at 20 C (68 F)
Between terminal "1" of solenoid connector and transaxle: Approx. 15 at 20 C (68 F)
Between terminal "15" of solenoid connector and transaxle: Approx. 15 at 20 C (68 F)
Between terminal "13" of solenoid connector and transaxle: Approx. 15 at 20 C (68 F)
Between terminal "14" of solenoid connector and transaxle: Approx. 15 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 (CVT assembly). CVT Assembly Dismounting and Remounting