Toyota ZZT230 series Repair Manual page 455

Dl-244
DTC P0750, P0755
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st. 2nd, 3rd or 0/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
trouble of the shift solenoid valves and valve body.
OTC No.
During normal drfvlng, the gear requlr&d by the
P0750
match the actual gear
P0755
(2--trip detection loalc)
HINT:
Check the shift solenoid valve No. 1 when DTC P0750 is output and check the shift solenoid valve No. 2
when DTC P0755 is output.
INSPECTION PROCEDURE
1
Check shift solenoid valve No.
N
Shift Solenoid AlB Malfunction
(Shift Solenoid Valve No. 1 /No. 2)
DTC
Detecting Condition
ECM
1
or No.
PREPARATION:
Remove the oil pan.
(a)
Remove the shift solenoid valve No. 1 or No. 2.
(b)
CHECK:
By applying 490 kPa (5 kgflcm'. 71 psi) of compressed
(a)
air, check that the solenoid valve does not leak air.
When battery positive voltage is supplied to the shift sole­
(b )
noid valve, check that the valve opens.
OK:
(a) Solenoid valve does not leak air.
(b) Solenoid valve opens.
"'"''
TRANSAXLE !U341 El
does
not
• Shift solenoid valve No. 1/No. 2 is stud< open or closed
Valve body is blocked
•
2
operation.
Replace the shift solenoid valve No.
Trouble Alea
up or stuck
1
or No. 2.
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