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Discussion in 'The Garage' started by GR, Dec 8, 2005.
Is there a place to look up the code my '91 Suburban is flashing in the parking brake light?
Not sure how to look it up, but it is probably a bad proportioning valve or something with the abs if it has it.
I think that's going to be a problem with your rear anti-lock brakes. I think you need a special reader for them.
Here are the typical fault codes and the meanings:
1-Should not occur (replace the controller if it does)
2-Open isolation valve circuit or defective ABS module
3-Open dump valve circuit or defective ABS module
4-Grounded or closed RABS or RWAL valve switch
5-Excessive actuations of dump valve during ABS braking
6-Erratic speed sensor signal
7-Shorted isolation valve or defective ABS module
8-Shorter dump valve or defective ABS module
9-High resistance or open speed sensor circuit (resistance should be 1000 to 10-2500 ohms)
11-Low speed sensor resistance (Dodge & Ford only)
12-Open speed sensor circuit (GM only)
13-Stop lamp switch circuit (Dodge & Ford)
14-ABS module speed processor (Dodge & Ford only)
15-ABS module program (Dodge & Ford only)
16-ABS module RAM memory failure (Dodge & Ford)
Code access On GM vehicles, fault codes can be retrieved manually (flash codes) by jumping terminals "A" and "H" (or grounding terminal "H") on the diagnostic connector, or you can use a scan tool. On Ford and Dodge trucks, fault codes can be accessed manually by grounding the diagnostic pigtail connector on the ABS control module.
The flash code sequence for Ford, GM, Dodge and import trucks with the Kelsey-Hayes rear-wheel ABS system are the same, but the flash codes are slightly different. If you're reading flash codes, start counting from the first long flash. Then add the short flashes that follow. The total of the long flash plus any short flashes that follow equals the number of the code.
Because the system can only do one code at a time, the first code must be read out, diagnosed and repaired before the system can generate any additional codes.
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