Code No. P0963:
Malfunction of Line Pressure Solenoid Valve (high input)
DIAGNOSTIC FUNCTION
The CVT-ECU monitors the line pressure solenoid valve circuit for open or short to power
supply.
JUDGEMENT CRITERIA
- All the conditions listed below remain for 0.2 seconds.
- The line pressure solenoid valve command current is 750 mA or more.
- The line pressure solenoid valve current, which the CVT-ECU monitors, is 200 mA
or less.
- The solenoid valve drive circuit is not shorted to earth.
- All the conditions listed below remain for 0.2 seconds.
- The solenoid valve drive circuit is not shorted to earth.
- The solenoid valve drive circuit system is defective.
PROBABLE CAUSES
- Malfunction of the valve body assembly (Faulty line pressure solenoid valve)
- Damaged wiring harness and connectors
- Malfunction of CVT-ECU
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STEP 1. Voltage measurement at CVT-ECU connector (PLLS
terminal)
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(1)Disconnect the CVT-ECU connector, and measure at the wiring harness side.
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(2)Turn the ignition switch to the "ON" position.
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(3)Measure the voltage between the CVT-ECU connector (PLLS terminal) and body earth.
OK: 0 V
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Q.
Is the check result normal?
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 Go to Step 2
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NO : Repair the connector(s) or the wiring harness (PLLS line between the CVT assembly
connector and the CVT-ECU connector).
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STEP 2. Check for open circuit in PLLS line between the CVT assembly
connector and the CVT-ECU connector
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Q.
Is the check result normal?
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Go to Step 3
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 Repair the connector(s) or the wiring harness.
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STEP 3. Line pressure solenoid valve check
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Refer to  .
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Q.
Is the check result normal?
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Go to Step 5
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Go to Step 4
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STEP 4. Check for open circuit in power supply line between the CVT
assembly connector and the valve body harness connector (line pressure solenoid valve line)
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Refer to .
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Q.
Is the check result normal?
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Replace the valve body assembly. (Refer to )
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Replace the valve body harness. (Refer to )
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STEP 5. Symptom recheck after erasing diagnosis code
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Q.
Is the diagnosis code set?
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Replace the CVT-ECU.
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Intermittent malfunction.
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