TM 9-2320-387-24-l
REFERENCE INFORMATION
TRANSMISSION
SYSTEM
The following chart will help you find the code you need. The Jl cable diagnostics checks (page 2-402) must be
performed. Always correct the lower code number first. If code 51 shows up, replace TCM (para. 4-45) operate
vehicle, and recheck for trouble codes.
TROUBLE CODE
21
22
24
28
37
38
39
51
52
53
58
59
68
69
71
73
74
75
79
81
82
83
85
86
87
CIRCUIT
Throttle Position (TP) High
Throttle Position (TP) Low
Transmission
Output Speed Sensor (TOSS)
Transmission
Range Pressure (TR) Switch
Torque Converter Clutch (TCC) Brake Switch Stuck ON
TCC Brake Switch Stuck OFF
TCC Stuck OFF
Transmission
Control Module (KM)
System Voltage High Long
System Voltage High
Transmission
Temperature High
Transmission
Temperature Low
Transmission
Component Slipping
Torque Converter Clutch (TCC) Stuck ON
Engine Speed Sensor Circuit Low
Pressure Control Solenoid (PCS) Current
Trancr,lission
Input Speed Sensor (TISS) Circuit
System Voltage Low
Transmission
Fluid Overtemp
2-3 Shift Solenoid Circuit Fault
l-2 Shift Solenoid Circuit Fault
TCC Solenoid (PWM) Circuit Fault
Undefined Ratio Error
Low Ratio Error
High Ratio Error
PAGE NO.
2-396
2-396
2-396
2-396
2-396
2-396
2-397
2-397
2-397
2-397
2-397
2-398
2-398
2-398
2-398
2-399
2-399
2-399
2-399
2-400
2-400
2-400
2-401
2-401
2-401
2-395
