Operation and maintenance manual

Section 120-0010
Transmission - Transmission and Mounting
SM 2124 Rev 3 8-03
12
Fault MEANING OF CODE TCU reaction Checks Remarks
Code possible reason for fault detection
(hex)
17
S.C. TO GROUND AT customer specific •check cables from TCU See figure 8
TCU detected a wrong voltage at the output pin, to device
that looks like a s.c. to vehicle ground •check connectors from
• cable is defective and is contacted to vehicle TCU to device
ground •check the resistance of
• device has an internal defect device
• connector pin is contacted to vehicle ground
18
S.C.TO BATTERY VOLTAGE AT ADM4 no reaction •check cables from TCU See figure 8
TCU detected a wrong voltage at the output pin, to relay
that looks like a s.c. to battery voltage •check connectors from
• cable is defective and is contacted to battery TCU to relay
voltage •check the resistance of
• relay has an internal defect relay
• connector pin is contacted to battery voltage
19
O.C. AT ADM4 no reaction •check cable from TCU See figure 8
TCU detected a wrong voltage at the output pin, to relay
that looks like a o.c. for this output pin •check connectors from
• cable is defective and has no connection to TCU relay to TCU
• relay has an internal defect •check resistance of
• connector has no connection to TCU relay
25
S.C.TO BATTERY VOLTAGE OR O.C. AT TRANSMISSION SUMP no reaction, •check cable from TCU to
TEMPERATURE SENSOR INPUT TCU uses default temp. sensor
the measured voltage is too high: OP-Mode: normal • check connectors
• cable is defective and is contacted to battery voltage •check temperature sensor
• cable has no connection to TCU
• temperature sensor has an internal defect
• connector pin is contacted to battery voltage or is
broken
26
S.C. TO GROUND AT TRANSMISSION SUMP TEMPERATURE SENSOR no reaction, •check cable from TCU to
INPUT TCU uses default temp. sensor
the measured voltage is too low: OP-Mode: normal •check connectors
• cable is defective and is contacted to vehicle ground •check temperature sensor
• temperature sensor has an internal defect
• connector pin is contacted to vehicle ground
27
S.C.TO BATTERY VOLTAGE OR O.C. AT RETARDER no reaction, •check cable from TCU to
TEMPERATURE SENSOR INPUT TCU uses default temp. sensor
the measured voltage is too high: OP-Mode: normal • check connectors
• cable is defective and is contacted to battery voltage •check temperature sensor
• cable has no connection to TCU
• temperature sensor has an internal defect
• connector pin is contacted to battery voltage or is
broken
28
S.C. TO GROUND AT RETARDER TEMPERATURE SENSOR INPUT no reaction, •check cable from TCU to
the measured voltage is too low: TCU uses default temp. sensor
• cable is defective and is contacted to vehicle ground OP-Mode: normal •check connectors
• temperature sensor has an internal defect •check temperature sensor
• connector pin is contacted to vehicle ground
31
S.C.TO BATTERY VOLTAGE OR O.C. AT ENGINE SPEED INPUT OP-Mode: substitute clutch •check cable from TCU to
TCU measures a voltage higher than 7.00 V at speed control sensor
input pin •check connectors
• cable is defective and is contacted to battery voltage •check speed sensor
• cable has no connection to TCU
• speed sensor has an internal defect
• connector pin is contacted to battery voltage or has
no contact