TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Brake Pressure Sensor harness connector.
Disconnect the CAB harness connector.
Measure the resistance of the Brake Pressure Sensor signal circuit.
Measure the resistance of the Brake Pressure Sensor ground circuit.
Measure the resistance of the Brake Pressure Sensor 5 volt supply circuit.
Is the resistance above 5.0 ohms for any of the circuits?
All
Yes
→ Repair the Brake Pressure Sensor circuit(s) for an open
No
→ Go To 5
5
Turn the ignition off.
Disconnect the Brake Pressure Sensor harness connector.
Inspect the harness and connectors related to this circuit. If any problems are found,
repair as necessary.
If no problems are found, replace the Brake Pressure Sensor in accordance with the
Service Information.
With the DRBIII
t, clear DTCs.
Road test the vehicle and perform several braking maneuvers.
With the DRBIII
t, read DTCs.
Does this DTC reset?
All
Yes
→ Replace the CAB in accordance with the Service Information.
No
→ Test Complete.
6
The condition that set this DTC is not present at this time.
Monitor the DRBIII
t while wiggle testing the related harness and connectors. Look
for any related parameters to change or for the DTC to reset.
Inspect the related harness and connectors.
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out, or corroded terminals.
Were any problems found?
All
Yes
→ Repair as necessary.
No
→ Test Complete.
16
BRAKES (CAB)
BRAKE PRESSURE SENSOR CIRCUIT —
Continued