Ford Corsar Repair Manual page 511

TROUBLE-SHOOTING AND DIAGNOSES
I
RE4F02A
I
~lfdiagnosis
start
--------------------
Light
---
S h d r
SAT1468
magnostrc Proceaure
12
SYMPTOM :
A/T does not shift from D1 to D 2 at the specified speed.
A/T does not shift from D 4 to D 2 when depressing accelerator
pedal fully at the specified speed.
I
Are Diagnostic Procedures 10
and 11 O.K.?
Does self-diagnosis show damage
to inhibitor switch after cruise
Combination
Go to Diagnostic Procedure 10
or 11.
Yes
'
Check inhibitor switch circuit.
-
Refer to "Self-diagnosis".
meter
No
sensor
Repair or replace revolution
sensor and speed knsor circuits.
Check revolution sensor
'
and N.G.
25 35
27
H
O.K.
A/T control unit
Check throttle sensor.
-
Refer
N.G.
Repair or replace throttle sensor.
-
to section ES.
1. Remove control valve.
-
Refer to "ON-VEHICLE
O.K.
SERVICE".
2.
Check the following items.
1-2
shift valve
O.K.
2-3
shift valve
3-4 shift valve
O.K.
4-
Shift solenoid A
Shift solenoid B
"Self-diagnosis".
speed sensor circuit.
-
Refer to
El
-
3. Disassemble A/T.
4. Check the following items.
Servo piston assembly
Brake band
,
v
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.