Toyota Camry Manual page 1444

DTC P0770
Drain
Line
Pressure
Drain
DTC No.
D Lock–up does not occur when driving in the lock–up range
(normal driving at 80 km/h [50 mph]), or lock–up remains ON
P0770 in the lock–up OFF range.
(2 trip detection logic)
D When lock–up is ON, clutch or brake slips or gear is broken.
INSPECTION PROCEDURE
1 Check solenoid valve SL operation.
OK
DIAGNOSTICS
Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the Throttle position sensor,
Air–flow meter and Crankshaft position sensor to monitor the
engagement condition of the lock–up clutch.
Then the ECM compares the engagement condition of the
lock–up clutch with the lock–up schedule in the ECM memory
to detect mechanical trouble of the shift solenoid valve SL,
valve body, torque converter clutch or automatic transaxle
Q07745
(clutch, brake or gear etc.).
DTC Detecting Condition
PREPARATION:
(a)
(b)
CHECK:
(a)
(b)
OK:
Q07746
NG
– AUTOMATIC TRANSAXLE (A140E)
D Shift solenoid valve SL is stuck open or closed
D Valve body blocked up or stuck
D Lock–up clutch
D Automatic transaxle (clutch, brake or gear etc.)
Remove the oil pan.
Remove the shift solenoid valve SL.
By applying 490 kPa (5 kgf/cm
air, check that the solenoid valve does not leak air.
When battery positive voltage is supplied to the shift sole-
noid valve, check that the solenoid valve opens.
(a) Solenoid valve does not leak air.
(b) Solenoid valve opens.
Replace the solenoid valve SL.
Author :
Trouble Area
2
, 71 psi) of compressed
Date :
DI–417
DI034–02
652