P1970

DTC P1970

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

- Select a level road with no traffic to minimize the risk of accident.
- Perform the test extremely carefully.
- Perform the road test using 2 persons, a driver and an assistant.

NOTE:

- If other DTC than P1970 is newly detected during this "DTC Confirmation Procedure", troubleshoot the newly detected DTC in first.
- Confirm that the following conditions are met in this procedure.

- Battery voltage > 10.5 V

1) Drive vehicle at more than 40 km/h (25 mile/h) 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. Sensor power supply 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 between "B1" circuit and each terminal at "C142" connector: infinity
Voltage of "B1" circuit: 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. Sensor ground circuit check
Check the following points.
Resistance of "C1" circuit between "C142" connector and ground: infinity
Resistance between "C1" circuit terminal and each terminal at "C142" connector: infinity
Are they in good condition?
YES
Go to Step 4.
NO
Repair or replace defective wire harness.
4. Primary pressure sensor and its circuit check
Check primary pressure sensor and its circuit according to Step 2 through 3 of P0842 DTC P0842 / P0843.
Are they in good condition?
YES
Go to Step 5.
NO
Repair or replace defective parts.
5. Secondary pressure sensor and its circuit check
Check secondary pressure sensor and its circuit according to Step 2 through 3 of P0847 DTC P0847 / P0848.
Are they in good condition?
YES
Go to Step 6.
NO
Repair or replace defective parts.
6. CVT fluid temperature and its circuit check
Check CVT fluid temperature sensor and its circuit according to Step 2 through 3 of P0711 DTC P0711.
Are they in good condition?
YES
Substitute a known-good TCM and recheck DTC. Service and Repair
NO
Replace CVT assembly. CVT Assembly Dismounting and Remounting