Reading ABS codes

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theterminator93

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North Ridgeville, OH
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1997 Thunderbird 4.6, 1998 Mark VIII LSC
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The ABS diagnostic connector is an OBD-I style connector with 3 pins. With the car off, locate and pull the connector out from its mount so you have access to it. It can be found under the hood next to the driver's shock tower and underhood fuse box. The pinout is:

---1--2---
3--4--5--6

Pin 2 is ground (black), and pins 4 and 5 are the only other wires on the connector (green and white). Connect pins 4 and 5 to each other and leave the ground alone. Turn the key on, and watch the ABS light blink to get the code number. The possible codes are below:

11 Electronic Controller (EBCM)
12 Electronic Controller (EBCM)
17 Reference Voltage (Traction Assist code - Mark VIII only)
18 Isolation Valve #1 (Traction Assist code - Mark VIII only)
19 Isolation Valve #1 (Traction Assist code - Mark VIII only)
21 Main Valve
22 Left Front Inlet Valve
23 Left Front Outlet Valve
24 Right Front Inlet Valve
25 Right Front Outlet Valve
26 Rear Inlet Valve
27 Rear Outlet Valve
28 Left Rear Inlet Valve
29 Left Rear Outlet Valve
31 Left Front Wheel Sensor
32 Right Front Wheel Sensor
33 Right Rear Wheel Sensor
34 Left Rear Wheel Sensor
35 Left Front Wheel Sensor Erratic Output
36 Right Front Wheel Sensor Erratic Output
37 Right Rear Wheel Sensor Erratic Output
38 Left Rear Wheel Sensor Erratic Output
41 Left Front Wheel Sensor Mismatched Output
42 Right Front Wheel Sensor Mismatched Output
43 Right Rear Wheel Sensor Mismatched Output
44 Left Rear Wheel Sensor Mismatched Output
45 Left Front and One Other Wheel Sensor
46 Right Front and One Other Wheel Sensor
47 Missing Rear Wheel Sensor
48 Missing Three or Four Wheel Sensor
51 Left Front Outlet Valve
52 Right Front Outlet Valve
53 Right Rear Outlet Valve
54 Left Rear Outlet Valve
55 Left Front Wheel Sensor Output Dropout
56 Right Front Wheel Sensor Output Dropout
57 Right Rear Wheel Sensor Output Dropout
58 Left Rear Wheel Sensor Output Dropout
61 Fluid Level Indicator and Pressure Warning Switch Circuit
62 Pedal Travel Switch
63 Pump Motor Speed Sensor
64 Pump Motor Pressure
67 Pump Motor Relay (Traction Assist code - Mark VIII only)
71 Left Front Wheel Sensor
72 Right Front Wheel Sensor
73 Right Rear Wheel Sensor
74 Left Rear Wheel Sensor
75 Left Front Wheel Sensor Erratic Output
76 Right Front Wheel Sensor Erratic Output
77 Right Rear Wheel Sensor Erratic Output
78 Left Rear Wheel Sensor Erratic Output
88 Electronic Controller (EBCM)
99 Electronic Controller (EBCM)
 
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