1 - Open the Diagnostic Module, and in the lid that flips open is a chart that tells you what each pin (the little connectors) is. You need to locate the pin labeled "TAT" and another labeled "GND." Using a paperclip or a piece of wire, connect, or "jumper" these two pins together. Some people have reported that their "GND" pin does not exist (has no connector, just an empty hole); this is ok, "GND" stands for "ground." If you DO NOT have a "GND" pin, then simply connect the "TAT" pin to the negative terminal of your battery (a.k.a. ground).
2 - Put your key in the ignition, but do not start your car. Turn the key into the "ON" position. Your HOLD Light will start flashing a certain number of times (if you have stored trouble codes). A LONG flash indicates a "10" and a short flash indicates a "1." You add them together to determine the Trouble Code. So, for example, 2 long flashes followed by 3 short ones would equal "10 + 10 + 1 + 1 + 1" which is 23. There is a pause between error codes, and it repeats the codes over and over until you turn the key off.
AFTER-REPAIR PROCEDURE
After indicated service or replacement is performed, clear codes. Recheck for codes. No codes should be present. If codes are present, see appropriate trouble code chart under CODE CHARTS to repair vehicle.
CLEARING CODES
1) Disconnect negative battery cable. Depress brake pedal for at least 20 seconds. Reconnect battery cable.
2) Ground test connector with jumper wire. Turn ignition on, but DO NOT start engine for 6 seconds. Start and run engine at 2000 RPM for 2 minutes. Verify no codes are displayed.
92-93 CODES
94-96 CODES
