Mercedes-Benz CS1000 User Manual
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Models
Model Years
124.026 124.030 124.050 124.090 124.051 124.230 124.290
1988-95
126.024 126.025 126.035 126.039 126.045 126.134 126.135
1988-91
Connect wires of Scanner as follows
Scanner
Data Link Connector 8-pin
Yellow
Socket 7
Black
Socket 1
Red
Battery (+)
FAULT CODE TABLE
DTC Readout
Possible Cause of Failure
1
No fault found
2
In car temperature sensor, short circuit
3
In car temperature sensor, open circuit
4
Outside temperature sensor, short circuit
5
Outside temperature sensor, open circuit
6
Evaporator temperature sensor, short circuit
7
Evaporator temperature sensor, open circuit
8
Heater core temperature sensor, short-circuit
9
Heater core sensor, open
12
Engine coolant temperature sensor, short circuit
13
Engine coolant temperature sensor, open circuit
30
Coolant pump, short circuit
31
Duo valve short circuit/open
33
A/C compressor control module short circuit
34
Auxiliary fan relay faulty
50
Switchover valve unit, faulty at between pins 5 and 8 (7 connections)
51
Switchover valve unit, faulty between pins 8 and 7 (7 connections)
52
Switchover valve unit, faulty between pins 8 and 3(7 connections)
54
Switchover valve unit, faulty between pins 8 and 4 (7 connections)
55
Switchover valve unit, faulty between pins 8 and 6(7 connections)
56
Switchover valve unit, faulty between pins 8 and 2(7 connections)
57
Switchover valve unit, faulty between pins 8 and 1(7 connections)