TROUBLE DIAGNOSES — Diagnostic Procedure 8: Vehicle cannot be started from D1 on Cruise test — Part 1
AT-53flowchartApplies to automatic transmission (A/T) equipped vehicles. Diagnostic Procedure 8, Part 1.
Diagnostic Procedure 8
SYMPTOM: Vehicle cannot be started from D1 on Cruise test — Part 1.
Diagnostic Procedure 8 — Vehicle cannot be started from D1 on Cruise test — Part 1
1
Is Diagnostic Procedure 7 O.K.?
No
Go to Diagnostic Procedure 7.
Yes
2
Does self-diagnosis show damage to revolution sensor, speed sensor, shift solenoid A or B after cruise test?
Yes
Check damaged circuit. — Refer to "Self-diagnosis".
No
3
Check throttle sensor. — Refer to section EF & EC.
N.G.
Repair or replace throttle sensor.
O.K.
4
Check line pressure at stall point with selector lever in "D" range. — Refer to "PRESSURE TESTING".
N.G.
1. Remove control valve assembly. — Refer to "ON-VEHICLE SERVICE".
1. Remove control valve assembly. — Refer to "ON-VEHICLE SERVICE".
2. Check the following items.
● Shift valve A
● Shift valve B
● Shift solenoid A
● Shift solenoid B
● Pilot valve
● Pilot filter
O.K.
5
1. Remove oil pan.
2. Check A/T fluid condition.
O.K.
return to step 7
N.G.
6
3. Disassemble A/T.
4. Check the following items.
● Forward clutch assembly
● Forward one-way clutch
● Low one-way clutch
● High clutch assembly
● Torque converter
● Oil pump assembly
O.K.
7
Check again.
N.G.
1. Perform A/T control unit input/output signal inspection.
1. Perform A/T control unit input/output signal inspection.
2. If N.G., recheck A/T control unit pin terminals for damage or connection of A/T control unit harness connector.
O.K.
INSPECTION END
See also
Diagnostic Procedure 7 · Self-diagnosis · PRESSURE TESTING · ON-VEHICLE SERVICE