Quote:
Originally Posted by mysocal911
This test provides key information. Possibilities:
1. The locking motors' timing may be incorrect, i.e. the phase of brass gears relative to locking motor switches.
2. The cab top ECU has a problem related to the unlocking mode when the locking motors are locked.
If you would like to discuss your technical problem, you can call the website mentioned in post #7.
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You can check the state of the locking motor switches by using an ohmmeter between each of the switches, SL & SR, and ground.
They should both indicate an open when they are in either the locked or unlocked position.