I found out how to pull the error codes from the TOD computer. Locate the OBD connector under the dash by the drivers left knee.
Insert a wire into port 8. Ground the other end. With the engine running the check light on the TOD indicator will flash out the error code. The code will be indicated by the series of flashes, long for 10, and short for 1. 12 is normal. If there is a stored error it will flash 12 for three times, then the error.
To clear a stored error code, and reset the TOD computer put the 4WD lever in the middle(neutral) position. ground the 8 pin, and start the engine. You must now tap the brake 5 times within the next 5 seconds. The TOD will flash with each tap. It is now reset. Shut the engine and engage TOD mode from neutral.
Codes:
12 Normal
13 Shorted Ground
14 Front Speed Sensor
15 Shorted VB
16 Front Speed Sensor
21 TPS
23 ECU
24 Rear Speed Sensor
26 EMC(+)Shorted Ground
27 Rear Speed sensor
31 EMC(+)Shorted/Disconnected Coil
36 ECU
37 ECU
38 ECU