CODE 318
VOLTAGE ON BRAKE LOW WHEN ED IS CLOSED.
This condition is present when low voltage is sensed on both CA402-18 and CA402-19 simultaneously. The probable
cause is the ED contact tips or a mechanical bind in the ED contactor.
Step 1: Raise truck so drive tire is clear of floor and place hardwood blocks under truck frame.
Step 2: Attach meter leads to battery negative and first CA402-18 then CA402-19.
Step 3: Turn key on while pressing the and buttons.
Select ED (A4.3) on display menu.
Press and hold. (drives component)
Check meter reading. Battery volts should be present at CA402-18 and CA402-19 when ED is energized.
If low voltage, then check for a high resistance connection between CA402-18, CA402-19 on
Access 3, and ED tips.
Check for high resistance connection between Access 3 CA402-18, CA402-19 and battery positive.
See note.
Note: If truck operates, then this could be a random nuisance code. Monitor code frequency. If it gradually
increases, replace Access 3.
CODE 384
OUTER BRAKE DRIVER Internal module short circuit. STATUS
Step 1: Measure voltage between CA402-8 and battery negative.
If: Less than 5 volts, check for short circuit between CA402-8 and battery negative. See note.
Note: If truck operates, then this could be a random nuisance code. Monitor code frequency. If it gradually
increases for no apparent reason, replace Access 3.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.