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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Chassis Diagnostic Procedures - Anti-Lock Brake System) >> Diagnostic Information And Procedures >> Brakes (Cab) - Symptoms >> Symptom: SYSTEM CONTROL MODE TIMEOUT - 74 >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. TONE WHEEL DAMAGE/MISSING
  2. FOUNDATION BRAKE FAULTS
  3. WHEEL BEARING LOOSE/BINDING
  4. WHEEL SPEED SENSOR CONCERN
  5. CAB - NO RESPONSE TO INPUT
  6. BRAKE LAMP SWITCH
  7. BRAKE SWITCH SENSE CIRCUIT
  8. CAB - INTERNAL FAULT
TEST ACTION AND APPLICABILITY

TEST ACTION APPLICABILITY
1 Turn the ignition off.
Inspect the affected Tone Wheel(s) for damage, missing teeth, cracks, or looseness.
NOTE: The Tone Wheel teeth should be perfectly square, not bent, or nicked.

Is the affected Tone Wheel(s) OK?
  1. Yes --> Go To 2
  2. No --> Repair as necessary.

    Perform ABS VERIFICATION TEST - VER 1.

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2 Turn the ignition off.
Visually inspect brakes for locking up due to lining contamination or overheating.
Visually inspect all brake components for defects which may cause the brakes to apply unequally.
Is any base brake component/hardware damaged?
  1. Yes --> Repair as necessary.

    Perform ABS VERIFICATION TEST - VER 1.

  2. No --> Go To 3
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3 Turn the ignition off.
Inspect the wheel bearings for excessive run out or clearance.
NOTE: Refer to the appropriate service information, if necessary, for procedures or specifications.

Is the wheel bearing clearance OK?
  1. Yes --> Go To 4
  2. No --> Repair as necessary.

    Perform ABS VERIFICATION TEST - VER 1.

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4 Turn the ignition on.
With the DRBIII®, read DTCs.
With the DRBIII®, erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the DRBIII®, read DTCs.
NOTE: Repair Wheel Speed Sensor concerns even if no active DTCs are present before diagnosing.

Does the DRBIII® display any Wheel Speed Sensor circuit failure DTCs right now?
  1. Yes --> Repair as necessary.

    Perform ABS VERIFICATION TEST - VER 1.

  2. No --> Go To 5
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5
NOTE: IF THE DRIVER "RIDES" THE BRAKES A "SYSTEM CONTROL MODE TIMEOUT" DTC MAYBE SET.
NOTE: DTC must be "active"
With the DRBIII® in Inputs/Outputs, read the Brake Switch state.Apply and release the brake pedal.Does the DRBIII® follow the pedal position?
  1. Yes --> Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for damage. Inform driver that DTC can be set by riding the brakes OR when they have had a very long braking maneuver down a grade.

    Perform ABS VERIFICATION TEST - VER 1.

  2. No --> Go To 6
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6 Turn the ignition off.
Apply and release the brake pedal.
Observe the brake lamps.
Do the brake lamps operate OK?
  1. Yes --> Go To 7
  2. No --> Repair as necessary.

    Perform ABS VERIFICATION TEST - VER 1.

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7
NOTE: DTC must be "active"
Turn the ignition off.Disconnect the CAB connector.
NOTE: Check connector - Clean/repair as necessary.
Turn the ignition on.Apply and release the brake pedal.Check Brake Switch Sense for ground with pedal released and open with pedal applied.Does the Brake Switch Sense circuit change state as specified?
  1. Yes --> Replace the Controller Antilock Brake in accordance with the Service Information. Refer to the SYMPTOM: *REPLACING THE CONTROLLER ANTILOCK BRAKE  for additional information.

    Perform ABS VERIFICATION TEST - VER 1.

  2. No --> Repair the Brake Switch Sense circuit for a short to battery, ground or for an open

    Perform ABS VERIFICATION TEST - VER 1.

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