Table of Contents
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Symptom
Late shift after
1.
Shift solenoid valve C defective
shifting from N
2.
A/T clutch pressure control
to D and D3, or
solenoid valves A and B defective
excessive shock
3.
A/T clutch pressure control
when shifted
solenoid valve C defective
into D or D3
4.
Shift cable broken or out of
adjustment
5.
Joint in shift cable and
transmission or body worn
6.
Input shaft (mainshaft) speed
sensor defective
7.
Output shaft (countershaft) speed
sensor defective
8.
ATF temperature sensor defective
9.
CPC valve C stuck
10.
Foreign material in separator
plate orifice
11.
Shift valve C defective
12.
Shift valve E defective
13.
Servo control valve defective
14.
1st accumulator defective
15.
1st check ball stuck
16.
1st clutch defective
Late shift after
1.
Shift solenoid valve C defective
shifting from N
2.
A/T clutch pressure control
to R
solenoid valves A and B defective
3.
A/T clutch pressure control
solenoid valve C defective
4.
Shift cable broken or out of
adjustment
5.
Joint in shift cable and
transmission or body worn
6.
Input shaft (mainshaft)
speed sensor defective
7.
Output shaft (countershaft) speed
sensor defective
8.
ATF temperature sensor defective
9.
Shift fork shaft stuck
10.
CPC valve C stuck
11.
Reverse CPC valve defective
12.
Foreign material in separator
plate orifice
13.
Shift valve E defective
14.
5th accumulator defective
15.
5th clutch defective
Probable cause(s)
Notes
•
Check the D indicator, and check for loose
connectors. Inspect the O-ring, and check the shift
solenoid valve for seizure.
•
Inspect the A/T clutch pressure control solenoid
valve body gasket and ATF feed pipes for wear and
damage. If the A/T clutch pressure control solenoid
valve is stuck, inspect the CPC valves.
•
Check for a loose shift cable at the shift lever and
the transmission control shaft.
•
Check the ATF strainer for debris. If the ATF
strainer is clogged with particles of steel or
aluminum, inspect the ATF pump. If the ATF pump
is OK, find the damaged components that caused
the debris. If no cause for the contamination is
found, replace the torque converter.
•
Check the 1st clutch pressure.
•
Inspect the clutch piston, clutch piston check valve,
and O-rings. Check the spring retainer for wear and
damage. Inspect the clutch end-plate-to-top-disc
clearance. If the clearance is out of tolerance,
inspect the clutch discs and plates for wear and
damage. If the discs and plates are worn or
damaged, replace them as a set. If they are OK,
adjust the clutch end plate clearance.
•
Check the D indicator, and check for loose
connectors. Inspect the O-ring, and check the shift
solenoid valve for seizure.
Inspect the A/T clutch pressure control solenoid
•
valve body gasket and ATF feed pipes for wear and
damage. If the A/T clutch pressure control solenoid
valve is stuck, inspect the CPC valves.
•
Check for a loose shift cable on the shift lever and
the transmission control shaft.
•
Check the ATF strainer for debris. If the ATF
strainer is clogged with particles of steel or
aluminum, inspect the ATF pump. If the ATF pump
is OK, find the damaged components that caused
the debris. If no cause for the contamination is
found, replace the torque converter.
•
Check the 5th clutch pressure.
•
Inspect the clutch piston, clutch piston check valve,
and O-rings. Check the spring retainer for wear and
damage. Inspect the clutch end-plate-to-top-disc
clearance. If the clearance is out of tolerance,
inspect the clutch discs and plates for wear and
damage. If the discs and plates are worn or
damaged, replace them as a set. If they are OK,
adjust the clutch end plate clearance.
(cont'd)
14-257
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Troubleshooting
