Good stuff for '90's Coaches

[Ralph L. Fullenwider]

Good morning everyone:

Just had some valuable information come my way, due to a break down on the
side of the road, that should benefit those that have '90's Coaches.

Check transmission light comes on: code 21
To try clearing this alarm, follow this sequence;

Trans in neutral
press the check transmission button
foot on break
put transmission in reverse
put transmission in neutral
put transmission in drive
repeat 2 times
ending with transmission in neutral
tun off transmission check switch

This sequence clears the check transmission light and resets the ECU that
connects to the DDEC and throttle should be returned to normal at this point.

How the system is connected from throttle to DDEC.

Throttle position sensor connects to the ECU the ECU then connects to the
DDEC. The ECU is the middle man in this case and is effected with low power
like the DDEC can be.


Safe travels,

Ralph and Charolette Fullenwider
Ralph's RV Solutions, Duncan, Oklahoma