Toyota AVENSIS 2000 Supplement Manual page 157

DI–26
DTC
P0750, P0755
SYSTEM DESCRIPTION
The Engine and ECT ECU uses signals from the vehicle speed sensor and crankshaft position sensor to
detect the actual gear position (1st, 2nd, 3rd or O/D gear).
Then the Engine and ECT ECU compares the actual gear with the shift schedule in the Engine and ECT
ECU memory to detect the mechanical trouble of the shift solenoid valves, the valve body or automatic trans-
axle (clutch, brake or gear etc.).
DTC No.
During normal driving, the gear required by the Engine and
P0750
ECT ECU does not match the actual gear
P0755
(2–trip detection logic)
HINT:
Check the No. 1 solenoid valve when DTC P0750/62 is output and check the No. 2 solenoid valve when DTC
P0755/63 is output.
INSPECTION PROCEDURE
1 Check No. 1 or No. 2 solenoid valve operation.
(+)
(–)
(–)
(+)
OK
AVENSIS/CORONA SUP (RM781E)
DIAGNOSTICS
Shift Solenoid A/B Malfunction
(No. 1/No. 2 Solenoid Valve )
DTC Detecting Condition
PREPARATION:
(a)
(b)
CHECK:
(a)
Air
(b)
OK:
D04318
– AUTOMATIC TRANSAXLE (A246E)
S No. 1/No. 2 solenoid valve is stuck open or closed
S Valve body is blocked up or stuck
S Automatic transaxle (clutch, brake or gear etc.)
Remove the oil pan.
Remove the No. 1 or No. 2 solenoid valve .
Applying 490 kPa (5 kgf/cm
check that the solenoid valve does not leak the air.
When battery voltage is supplied to the shift solenoid
valve, check that the valve opens.
(a) Solenoid valve does not leak air.
(b) Solenoid valve opens.
NG Replace the No. 1 or No. 2 solenoid valve.
Trouble Area
2
, 71 psi) of compressed air,
DI1FV–05