Code No. P2763:
Malfunction of Lock-up Solenoid Valve (high input)
DIAGNOSTIC FUNCTION
The CVT-ECU monitors the lock-up solenoid valve circuit for open or short to power supply.
JUDGEMENT CRITERIA
- All the conditions listed below remain for 5 seconds.
- The lock-up solenoid valve command current is 750 mA or more.
- The lock-up 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 5 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 lock-up solenoid valve)
- Damaged wiring harness and connectors
- Malfunction of CVT-ECU
|
STEP 1. Voltage measurement at CVT-ECU connector (LULS
terminal)
|
|
(1)Disconnect the CVT-ECU connector, and measure at the wiring harness side.
|
|
(2)Turn the ignition switch to the "ON" position.
|
|
(3)Measure the voltage between the CVT-ECU connector (LULS terminal) and body earth. OK: 0 V
|
|
Q.
Is the check result normal?
|
|
Go to Step 2
|
|
|
|
NO : Repair the connector(s) or the wiring harness (LULS line between the CVT assembly
connector and the CVT-ECU connector).
|
|
|
|
STEP 2. Check for open circuit in LULS line between the CVT assembly
connector and the CVT-ECU connector
|
|
Q.
Is the check result normal?
|
|
Go to Step 3
|
|
|
|
Repair the connector(s) or the wiring harness.
|
|
|
|
STEP 3. Lock-up solenoid valve check
|
|
Refer to .
|
|
Q.
Is the check result normal?
|
|
Go to Step 5
|
|
|
|
Go to Step 4
|
|
|
|
STEP 4. Check for open circuit in power supply line between the CVT
assembly connector and the valve body harness connector (lock-up solenoid valve line)
|
|
Refer to .
|
|
Q.
Is the check result normal?
|
|
Replace the valve body assembly. (Refer to )
|
|
|
|
Replace the valve body harness. (Refer to )
|
|
|
|
STEP 5. Symptom recheck after erasing diagnosis code
|
|
Q.
Is the diagnosis code set?
|
|
Replace the CVT-ECU.
|
|
|
|
Intermittent malfunction.
|
|
|