Operation and maintenance manual

Section 120-0010
Transmission - Transmission and Mounting
SM 2124 Rev 3 8-03
14
Fault MEANING OF CODE TCU reaction Checks Remarks
Code possible reason for fault detection
(hex)
3A
S.C.TO BATTERY VOLTAGE OR O.C.AT OUTPUT SPEED INPUT special mode for gear •check cable from TCU to
TCU measures a voltage higher than 12.5 V at speed selection sensor
input pin OP-Mode: substitute clutch • check connectors
• cable is defective and is contacted to battery voltage control •check speed sensor
• cable has no connection to TCU if a failure is existing at
• speed sensor has an internal defect turbine speed,
• connector pin is contacted to battery voltage or has TCU shifts to neutral
no contact OP-Mode: limp home
3B
S.C.TO GROUND AT OUTPUT SPEED INPUT special mode for gear •check cable from TCU to
TCU measures a voltage less than 1.00V at speed input selection sensor
pin OP-Mode: substitute clutch •check connectors
• cable / connector is defective and is contacted to control •check speed sensor
vehicle ground if a failure is existing at
turbine speed,
TCU shifts to neutral
OP-Mode: limp home
3C
LOGICAL ERROR AT OUTPUT SPEED INPUT special mode for gear •check cable from TCU to This fault is reset after
TCU measures a output speed over a threshold and at selection sensor power up of TCU
the next moment the measured speed is zero OP-Mode: substitute clutch •check connectors
• cable / connector is defective and has bad contact control •check speed sensor
• speed sensor has an internal defect if a failure is existing at •check sensor gap
• sensor gap has the wrong size turbine speed,
TCU shifts to neutral
OP-Mode: limp home
3E
OUTPUT SPEED ZERO DOESN’T FIT TO OTHER SPEED SIGNALS special mode for gear •check sensor signal of This fault is reset after
if transmission is not neutral and the shifting has selection output speed sensor power up of TCU
finished, OP-Mode: substitute clutch •check sensor gap of output
TCU measures outputspeed zero and turbine speed or control speed sensor
internal speed not equal to zero. if a failure is existing at •check cable from TCU to
• speed sensor has an internal defect turbine speed, sensor
• sensor gap has the wrong size TCU shifts to neutral
OP-Mode: limp home
56 ENGINE CONF
TIMEOUT OP-Mode: substitute clutch •check engine controller
Timeout of CAN-message ENGINE CONF from engine control •check wire of CAN-Bus
controller • check cable to engine
• interference on CAN-Bus controller
• CAN wire/connector is broken
• CAN wire/connector is defective and has contact to
vehicle ground or battery voltage
57 EEC1
TIMEOUT OP-Mode: substitute clutch •check EEC controller
Timeout of CAN-message EEC1 from EEC controller control •check wire of CAN-Bus
• interference on CAN-Bus •check cable to EEC
• CAN wire/connector is broken controller
• CAN wire/connector is defective and has contact to
vehicle ground or battery voltage
58 EEC3
TIMEOUT OP-Mode: substitute clutch •check EEC controller
Timeout of CAN-message EEC3 from EEC controller control •check wire of CAN-Bus
• interference on CAN-Bus •check cable to EEC
• CAN wire/connector is broken controller
• CAN wire/connector is defective and has contact to
vehicle ground or battery voltage
65
ENGINGE TORQUE SIGNAL OP-Mode: substitute clutch •check engine controller
CAN signal for engine torque is defective control •check wire of CAN-Bus
• engine controller is defective •check cable to engine
• interference on CAN-Bus controller
66
KICKDOWN SIGNAL no reaction • check engine controller
CAN signal for kickdown is defective •check wire of CAN-Bus
• engine controller is defective •check cable to engine
• interference on CAN-Bus controller