Operation and maintenance manual

Section 120-0010
Transmission - Transmission and Mounting
SM 2124 Rev 3 8-03
16
Fault MEANING OF CODE TCU reaction Checks Remarks
Code possible reason for fault detection
(hex)
75
S.C. TO GROUND AT CLUTCH K2 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit, the voltage at K2 valve is too low. if failure at another •check connectors from
• cable / connector is defective and has contact to clutch is pending gearbox to TCU
vehicle ground TCU shifts to neutral •check regulator resistance
1)
• regulator has an internal defect OP-Mode: TCU shutdown • check internal wire
harness of the gearbox
76
O.C. AT CLUTCH K2 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit. if failure at another • check connectors from
• cable / connector is defective and has no contact to clutch is pending gearbox to TCU
TCU TCU shifts to neutral •check regulator resistance
1)
• regulator has an internal defect OP-Mode: TCU shutdown • check internal wire
harness of the gearbox
77
S.C.TO BATTERY VOLTAGE AT CLUTCH K3 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit, the voltage at K3 valve is too high. if failure at another • check connectors from
• cable / connector is defective and has contact to clutch is pending gearbox to TCU
battery voltage TCU shifts to neutral •check regulator resistance
1)
• cable / connector is defective and has contact to OP-Mode: TCU shutdown •check internal wire
another regulator output of the TCU harness of the gearbox
• regulator has an internal defect
78
S.C. TO GROUND AT CLUTCH K3 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit, the voltage at K3 valve is too low. if failure at another •check connectors from
• cable / connector is defective and has contact to clutch is pending gearbox to TCU
vehicle ground TCU shifts to neutral •check regulator resistance
1)
• regulator has an internal defect OP-Mode: TCU shutdown • check internal wire
harness of the gearbox
79
O.C. AT CLUTCH K3 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit. if failure at another • check connectors from
• cable / connector is defective and has no contact to clutch is pending gearbox to TCU
TCU TCU shifts to neutral •check regulator resistance
1)
• regulator has an internal defect OP-Mode: TCU shutdown • check internal wire
harness of the gearbox
81
S.C.TO BATTERY VOLTAGE AT CLUTCH K4 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit, the voltage at K4 valve is too high. if failure at another • check connectors from
• cable / connector is defective and has contact to clutch is pending gearbox to TCU
battery voltage TCU shifts to neutral •check regulator resistance
1)
• cable / connector is defective and has contact to OP-Mode: TCU shutdown •check internal wire
another regulator output of the TCU harness of the gearbox
• regulator has an internal defect
82
S.C. TO GROUND AT CLUTCH K4 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit, the voltage at K4 valve is too low. if failure at another •check connectors from
• cable / connector is defective and has contact to clutch is pending gearbox to TCU
vehicle ground TCU shifts to neutral •check regulator resistance
1)
• regulator has an internal defect OP-Mode: TCU shutdown • check internal wire
harness of the gearbox
83
O.C. AT CLUTCH K4 TCU shifts to neutral •check cable from TCU to
1)
see figure 8
the measured resistance value of the valve is out of OP-Mode: limp home gearbox
limit. if failure at another • check connectors from
• cable / connector is defective and has no contact to clutch is pending gearbox to TCU
TCU TCU shifts to neutral •check regulator resistance
1)
• regulator has an internal defect OP-Mode: TCU shutdown • check internal wire
harness of the gearbox