1211 - Control Module (DME)
1. Cancel the Digital Motor Electronic (DME) control unit fault code memory by disconnecting the control unit harness connector (control unit located in the E-Box), see COMPONENT LOCATIONS. Reconnect the DME control unit connector and test drive the vehicle.
^ If a fault code 1211 is present, the DME control unit is defective. Always refer to CHECKING THE BASICS before replacing the control unit.
DME Control Unit Harness Connector:
DME CONTROL UNIT PIN DESIGNATIONS
PIN TYPE DESCRIPTION
1 output fuel pump relay
2 output idle valve (close)
3 output injector 1
4 output injector 2
5 output injector 3
6 -- --
7 -- --
8 ground fault lamp
9 -- --
10 -- --
11 output --throttle position (EGS)
12 input throttle valve potentiometer
13 output hot wire cleaning
14 ground aux component ground
15 -- --
16 input camshaft (position) sensor signal
17 output TI signal
18 --
19 -- --
20 -- --
21 -- --
22 -- --
23 output ignition coil
24 output ignition coil
25 output ignition coil
26 input continuous positive current (memory)
27 output main relay (pin 85)
28 ground electronics ground/sensor shield
29 output idle valve (open)
30 -- --
31 output injector 4
32 output injector 5
33 output injector 6
34 ground ground for remaining output stages
35 -- --
36 output tank ventilation (purge valve)
37 output lambda sensor heater relay
38 -- --
39 -- --
40 -- --
41 input air mass meter signal
42 -- --
43 -- --
44 ground camshaft sensor ground
45 -- --
46 -- --
47 -- --
48 output --AC compressor shut down
49 -- --
50 output ignition coil
51 output ignition coil
52 output ignition coil
53 -- --
54 input operating power
55 ground ignition ground
56 input terminal 15
57 -- --
58 -- --
59 output + 5VDC reference supply (throttle potentiometer)
60 input programming voltage input
61 -- --
62 -- --
63 -- --
64 input EGS ignition retard
65 input range selector (park or neutral = B+)
66 -- --
67 input induction-type pulse generator
68 -- --
69 -- --
70 input lambda sensor
71 ground lambda sensor ground
72 -- --
73 input speedometer signal
74 output TD signal
75 -- --
76 -- --
77 input air temp signal
78 input engine temp signal
79 -- --
80 -- --
81 input BC code or + S DWA
82 -- --
83 -- --
84 -- --
85 input AC compressor control
86 input AC switch
87 input diagnosis alarm line
88 input/output diagnosis data line