Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
NOTE:
This DTC must be active for the results of this test to be valid.
1. Turn the ignition on.
2. With the scan tool, read and record DTCs.
3. With the scan tool, read and record Freeze Fame information.
4. With the scan tool, erase DTCs.
5. Start the engine.
6. Press the brake pedal firmly and release.
7. With the scan tool, read and record DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Perform the ABS INTERMITTENT CONDITION TEST. Refer to STANDARD PROCEDURE .
MECHANICAL BRAKE SYSTEM INSPECTION
1. Turn the ignition off.
2. Check the brake fluid for contaminants.
3. Visually inspect all the brake lines for bent, damaged, or pinched restrictions.
  Where any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
BRAKE PRESSURE
1. Start the engine.
2. The brake pedal released.
3. With the scan tool, under "Data Display" read the brake pressure.
  Is the Brake Pressure below 10 bar (145 psi)?
  
  Yes
  - Go To 4
  No
  - Go To 5
BRAKE PEDAL INSPECTION
1. Turn the ignition off.
2. Check the brake pedal for damage or restrictions not allowing it to fully return.
  Where any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Replace the Integrated Control Unit (ICU) in accordance with the Service Information. Refer to INTEGRATED CONTROL UNIT (ICU), REMOVAL
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
BRAKE PEDAL POSITION (BPP) SENSOR
1. Start the engine.
2. With the scan tool, under "Data Display" monitor the brake switch and the brake pressure.
3. Press the brake pedal slowly.
  Did the BBP sensor indicate pressed before their was brake pressure?
  
  Yes
  - Go To 6
  No
  - Replace the Brake Pedal Position (BPP) Sensor in accordance with the Service Information. Refer to SWITCH, STOP LAMP, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
INTEGRATED CONTROL UNIT (ICU)
WARNING:
To avoid possible serious or fatal injury, check brake capability is available before road testing.
1. Test drive the vehicle.
2. With the scan tool, under "Data Display" read the brake pressure.
3. Without applying the brakes moderately accelerate the vehicle three to four times.
  Was the Brake Pressure above 10 bar (145 psi)?
  
  Yes
  
  NOTE:
  For this DTC it is necessary to replace both the ABS Module and the HCU as a complete unit.
  - Replace the Integrated Control Unit (ICU) in accordance with the Service Information. Refer to INTEGRATED CONTROL UNIT (ICU), REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 7
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
1. Replace the Anti-Lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
2. Ignition on, engine not running.
3. With the scan tool, erase DTCs.
4. Start the engine.
5. Press the brake pedal firmly and release.
6. With the scan tool, read the DTCs.
  Does the DTC remain active?
  
  Yes
  - Replace the Hydraulic Control Unit (HCU) in accordance with the Service Information. Refer to HYDRAULIC CONTROL UNIT (HCU), REMOVAL
  - Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Test complete.