Fault Code Guide

Electrical Pre-Test
Procedure Result Action
With the ignition switch off, remove the X1
connector from the TCU and check for
resistance between pins 7 and 13 (J1939
datalink).
Resistance is less than 55 or greater
than 65 ohms.
Troubleshoot the J1939 datalink. See
Freightliner Service Bulletin 54-133.
Resistance is between 55 and 65
ohms.
The vehicle has passed the electrical
pre-test. Troubleshoot active fault
codes, if any.
Table 1, Electrical Pre-Test
NOTE: To see the identification plate on the
TCU it may be necessary to remove the splash
guard.
Troubleshooting Tables, No
Fault Codes
In a few cases there will be a definite problem and
no J1587 fault code will be sent.
• If the engine will not crank and there are no
transmission fault codes, see Table 2.
10/05/2006
0005255 90 32 6 09 7 0A
20 0 3 0 0 4
0 0 6 00 0 14 7 7
f261384
1
3
5
2
4
NOTE: The TCU and X-Y Actuator each have their own
WABCO identification plate (arrows) with unique serial
numbers.
1. TCU (Transmission
Control Unit)
2. Splash Guard
3. WABCO
Identification Plate
4. Serial Number
5. X-Y Actuator
Fig. 1, Serial Numbers for TCU and X-Y Actuator
1
2
DaimlerChrysler
Bez: G 60−6
IdNr 715053 123456
Code C07−00036−031
M−C
Var. 041962
10/05/2006
f261383
DaimlerChrysler
Bez: G 60−6
IdNr 715053 123456
Code C07−00036−031
M−C
Var. 041962
1. Transmission
Identification Plate
2. Serial Number
Fig. 2, Transmission Serial Number
Freightliner AMT
3
and Mercedes-Benz Automated-Manual
Transmissions
26.03
Troubleshooting Without Fault Codes
Business Class M2 Workshop Manual, Supplement 20, September 2011301/4