DTC P0969 / P0970 / P0971
Precautions: Precautions for Diagnosing Trouble · Precautions for Disassembly and Reassembly · Precautions for Transmission / Transaxle · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0969: Pressure Control Solenoid “C” Control Circuit Range / Performance Difference between measured circuit current of pressure control solenoid valve “C” and commanded circuit current is higher than specified value. (1 D/C detection logic) |
•Pressure control solenoid valve “C”
•Solenoid harness with ATF temperature sensor •TCM |
|
P0970: Pressure Control Solenoid “C” Control Circuit Low Pressure control solenoid valve “C” drive circuit is open or shorted to ground. (1 D/C detection logic) |
|
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P0971: Pressure Control Solenoid “C” Control Circuit High Pressure control solenoid valve “C” drive circuit is shorted to power supply. (1 D/C detection logic) |
Circuit Diagram
| [A]: | Solenoid harness connector (View: [a]) | A2: | Pressure control solenoid valve “C” ground circuit | 3. | A/T |
| [B]: | Pressure control solenoid valve “C” connector (View: [a]) | 1. | TCM | 4. | Pressure control solenoid valve “C” |
| A1: | Pressure control solenoid valve “C” drive circuit | 2. | CPU |
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 a tester.
•Perform the test extremely carefully.
•Perform the road test using 2 persons, a driver and a tester.
NOTE:
Check that the following condition is met in this “DTC Confirmation Procedure”.
•DTC U0073 or U0100 is not detected.
1)Warm up engine to normal operating temperature.
2)Drive vehicle at 2nd gear in M range for 1 minute.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “A/T Control System Check” performed?
|
Go to Step 2.
|
Go to A/T Control System Check.
|
| 2 |
Pressure control solenoid valve “C” and solenoid harness check
1)Check pressure control solenoid valve “C” and solenoid harness.
Is check result OK?
|
Check for intermittent trouble.
|
Go to Step 3.
|
| 3 |
Solenoid harness check
1)Remove transaxle side oil pan.
2)Disconnect pressure control solenoid valve “C” connector.
3)Check for proper terminal connections to solenoid harness connector and pressure control solenoid valve “C” connector.
4)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and other terminal at solenoid harness connector: infinity •Resistance between “A2” circuit terminal and other terminal at solenoid harness connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 4.
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Replace solenoid harness with ATF temperature sensor.
|
| 4 |
Pressure control solenoid valve “C” check
1)Check pressure control solenoid valve “C”.
Is check result OK?
|
Substitute a known-good TCM and recheck DTC.
|
Replace valve body assembly.
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