DTC Troubleshooting
DTC P1970 TROUBLESHOOTING CHART
| Step |
Action |
YES |
NO |
| 1 |
Was "CVT System Check" performed? |
Go to Step 2. |
Go to CVT SYSTEM CHECK . |
| 2 |
Sensor power supply circuit check
- Turn off ignition switch and disconnect TCM connectors.
- Check for proper terminal connection to TCM connectors.
- If connections are OK, check that sensor power supply circuit (B1) is as follows.
- Insulation resistance of wire harness is infinity between sensor power supply circuit and each terminal at solenoid connector.
- Circuit voltage of sensor power supply circuit is 0 - 1 V with ignition switch in ON position.
Are they in good condition? |
Go to Step 3. |
Repair or replace defective wire harness. |
| 3 |
Sensor ground circuit check
- Turn off ignition switch and disconnect TCM and solenoid connectors.
- Check for proper terminal connection to TCM and solenoid connectors.
- If connections are OK, check that sensor ground circuit (B2) is as follows.
- Insulation resistance of sensor ground circuit is infinity between solenoid connector and vehicle body ground.
- Insulation resistance of wire harness is infinity between sensor ground circuit terminal and each terminal at solenoid connector.
Are they in good condition? |
Go to Step 4. |
Repair or replace defective wire harness. |
| 4 |
Primary pulley speed sensor and its circuit check
- Check primary pulley speed sensor and its circuit according to Step 3 through 4 of DTC P0717 .
Are they in good condition? |
Go to Step 5. |
Repair or replace defective parts. |
| 5 |
Secondary pulley speed sensor and its circuit check
- Check secondary pulley speed sensor and its circuit according to Step 3 through 4 of DTC P0722 .
Are they in good condition? |
Go to Step 6. |
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 DTC P0711 .
Are they in good condition? |
Substitute a known-good TCM and recheck. |
Replace CVT assembly. |