DIAGNOSTIC FUNCTION
TCM determines malfunction by detecting the abnormality in the line pressure solenoid valve.
DESCRIPTIONS OF MONITOR METHODS
- Specified amount of current is not flown to the line pressure solenoid valve because of an open or short circuit.
MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
- P0715: Malfunction of primary pulley speed sensor
- P0740: Malfunction of lockup solenoid valve
- P0840: Malfunction of secondary pressure sensor
Sensor (The sensor below is determined to be normal)
- Primary pulley speed sensor
- Secondary pressure sensor
LOGIC FLOW CHARTS (Monitor Sequence-Output Shorted Low)
LOGIC FLOW CHARTS (Monitor Sequence-Output Open Circuit/Shorted-high)
DTC SET CONDITIONS
Judgment Criteria
- Monitored current [target current: 750 mA or more]: 400 mA or less. (5 seconds)
- Monitored current: 1.34 A or more. (1 second)
OBD-II DRIVE CYCLE PATTERN
Ignition switch: ON (start the engine and keep it for 10 seconds or more)
PROBABLE CAUSES
- Malfunction of valve body assembly (Faulty line pressure solenoid valve)
- Damaged wiring harness and connectors
- Malfunction of TCM