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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 5284
Experience:  Owner at DJ Wilson
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2003 International with Meritor ZF auto transmission.. can

Customer Question

2003 International with Meritor ZF auto transmission.. can be going down the road just fine, i notice that i lose my speedo and then transmission shows system malfunction on ZF gear indicator on dash. transmission stays stuck in whatever gear it happened to be in. will not go up or down or neutral. turn key off then back on and transmission seems to reset and work fine until i lose speedo again. need help diaging problem
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

Hi my name is***** post the complete model of your transmission from the ID tag on the transmission and also any fault codes you are getting.

Customer: replied 1 year ago.
tag only shows Meritor model # ***** .. inside truck shows meritor ZF FREEDOMLINE......Instrument panel shows "no faults" on meritor ZF gear indicator i show "CH" and "SM" at ign on
Expert:  Daniel Wilson replied 1 year ago.

CH is just system check. SM is a system malfunction detected. Click this link for more information, diagrams, and fault codes.


Expert:  Daniel Wilson replied 1 year ago.

Check the harness and connections for the speed sensor on the transmission for a possible poor connection or corroded damaged wire or connector pin causing a loss of speed signal. Check for fault codes and see what you get for codes. SM means there are codes logged.

Customer: replied 1 year ago.
i did the Neutral + function procedure got "E7"
neutral + function + downshift "e7"
brake depressed + N +function "30"
brake depressed + N+ Function + downshift "e7"where is the speed sensor on tranny located?

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