Toyota AVENSIS 2000 Supplement Manual page 226

DTC P0770
SYSTEM DESCRIPTION
The Engine and ECT ECU 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 Engine and ECT ECU compares the engagement condition of the lock–up clutch with the lock–up
schedule in the Engine and ECT ECU memory to detect mechanical trouble of the DSL solenoid valve, valve
body and torque converter.
DTC No.
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)
INSPECTION PROCEDURE
1 Check DSL solenoid valve operation.
(–) (+)
(–) (+)
D03447
D03448
OK
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
Shift Solenoid E Malfunction
(DSL Solenoid Valve) (Europe only)
DTC Detecting Condition
PREPARATION:
(a)
(b)
CHECK:
(a)
(b)
OK:
D03725
NG
– AUTOMATIC TRANSAXLE (U240E)
S DSL solenoid valve is stuck open or closed
S Valve body blocked up or stuck
S Lock–up clutch
Remove the oil pan.
Remove the DSL solenoid valve.
Applying 490 kPa (5 kgf/cm
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 DSL solenoid valve.
Trouble Area
2
, 71 psi) of compressed air,
DI–95
DI4ZX–05