P0740
Parts description
The lock-up solenoid valve is activated, with the gear in D(4), by the A/T control unit in response to signals sent from the vehicle speed and throttle position sensors. Lock-up piston operation will then be controlled.
Lock-up operation, however, is prohibited when ATF temperature is too low.
Trouble judgment conditions
Diagnostic trouble code detecting condition
With CONSULT
1. Turn ignition switch "ON".
2. Select "SELF-DIAG RESULTS" mode with CONSULT.
3. Drive vehicle in D(1) -> D(2) -> D(3) -> D(4) -> D(4) Lock-up position.
With generic Scan Tool
1. Turn ignition switch "ON".
2. Select "MODE 3" WITH GENERIC SCAN TOOL.
3. Drive vehicle in D(1) -> D(2) -> D(3) -> D(4) -> D(4) Lock-up position.
Without Scan Tool
1. Turn ignition switch "ON".
2. Perform self-diagnosis.
Refer to Self-Diagnostic Procedure Without Scan Tool.
Displaying & Reading Trouble Codes
3. Drive vehicle in D(1) -> D(2) -> D(3) -> D(4) -> D(4) Lock-up position.
