Model 8210/8250 Maintenance Manual Section 6. Messages and Codes
Messages and Caution Codes
Publication:1146945/001, Revised: 25 Sep 2018 6-15
Code C66
Code C67
Code C68
Code Title Brake Coil Driver Open or Shorted
Operator Display C66
TA Flash Code “3,2”
System Response No Travel
Reason The TA detected an open or short in the Brake Coil Driver 2 circuit.
Tests to Run Troubleshoot wiring to and from the brake and the brake coil for opens or shorts.
The brake coil should have approximately 14 ohms resistance. See “Pinout Matrix”
on page 8-9.
How to Clear Determine cause of short or open circuit and correct.
Code Title EM Brake Not Set
Operator Display C67
TA Flash Code “9,2”
System Response No Travel
Reason Triggered if the brake switch is open (handle up) and the brake is applied and no
motion is detected and then motion is detected without releasing the brake. A weak
brake or excessive skidding and then gripping during a deadman braking event
could cause this.
Tests to Run Troubleshoot wiring to and from the brake and the brake coil for opens or shorts.
The brake coil should have approximately 14 ohms resistance. See “Pinout Matrix”
on page 8-9. Check brake gap. See “Air Gap Inspection” on page 7-36.
How to Clear Return throttle to neutral. Replace the brake or rotor as needed.
Code Title Brake SelfTest Failed
Operator Display C68
System Response Traction performance limited to 1 MPH (1.6 km/h)
Reason Brake did not hold the truck stationary during SelfTest.
Tests to Run Check for worn brake. Check brake gap. See “Air Gap Inspection” on page 7-36.
Verify brake release bolts are not installed.
How to Clear Replace the brake or rotor as needed. Cycle the truck OFF/ON.
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