Toyota ZZT230 series Repair Manual page 400

DTC
SYSTEM DESCRIPTION
The
o o
it uses the signals from the throttle position sensor, air-flow meter and crankshaft position sensor
ECM
Then
to m n r the engagement condition of the lock-up clutch.
memory
the
ECM
ECM
clu1ch.
lociHJp
DTCNo.
(normal driving alSO
P0770
In the
(2-trip detection logic)
INSPECTION PROCEDURE
1 Check solenoid valve
)
) c:J
P0770 Shift Solenoid E Malfunction
(Shift Solenoid Valve DSL)
the
compares engagement condition of the lock-up clutch with the lock-up schedule in the
to detect mechanical trouble of the shift solenoid valve
OTC Detecting Condition
kmhl
when driving in the lock-up
does not occu r
[50 mph)),
lock-up OfF
range.
DSL
oo3n5
-
DIAGNOSTICS
AUTOMATIC
Of
range
Shift solenoid valve DSL is stuck open or closed
•
lock-up remains ON
Valve body blocked up or
•
Lock-up clutch
•
opera11on.
PREPARATI O N:
(a) Remove the oil pan.
CHECK:
Remove the shift solenoid valve
(b)
(a) Applying 490 kPa
check that the solenoid valve does not leak air.
When battery positive voltage is supplied to the shift sole­
(b)
OK: (a) SOl e noi d val v e does not l e ak ai r .
noid valve, check that the solenoid valve opens.
(b) Sol e noi d val v e
Repl a ca the sol e noi d val v e
TRANSAXLE CU240EI
DSL,
valve body and torque converter
Trouble Area
stuck
DSL.
kgf/cm 2 , 71 psi) of compressed air,
(5
opens.
DSL.
01-189