Hi everyone, I am new to the forum and not much of a mechanic, so thought someone here may be able to help with my problem.

I pulled into the driveway the other day, turned off the engine, removed the key and left the vehicle. But I heard something running, sounded like the Air Conditioner compressor, but it was the ABS pump. I pulled the fuse and brought it into the shop. They scanned and came up with "Code 67 Pump Motor Circuit Open". I don't recall slamming on the brakes.

So they said to bring it in and they would have to trouble shoot the electrical first, 2-3 hrs of shop time, then most likely replace the ABS pump...$1,800 +... Ouch !

So I turn to this forum, anyone have any similiar experience with this problem?

Thanks...JJ15

 

ABS pump is about a $450 part new, they must think a lot about 2-3 hours of their shop time!!!

from the book, this is the test procedure, but unfortunately, you need a DRBIII


PUMP MOTOR CIRCUIT OPEN — 67
For a complete wiring diagram Refer to Section 8W.
² When Monitored:
Ignition on.
² Set Condition:
Ignition on for at least 3.5 seconds. ABS pump motor command never given during the current ABS command.
Low feedback voltage from the low side of the motor.

Possible Causes
ABS PUMP MOTOR INTERMITTENT DTC
FUSED B(+) CIRCUIT INTERMITTENTLY SHORTED TO GROUND
FUSED B(+) CIRCUIT SHORTED TO GROUND
FUSE OPEN - PUMP MOTOR CIRCUIT
NO B+ SUPPLY TO FUSE
ABS PUMP MOTOR INOPERATIVE
FUSED B(+) CIRCUIT OPEN
GROUND CIRCUIT OPEN
GROUND CIRCUIT HIGH RESISTANCE
CONTROLLER ANTI-LOCK BRAKE


Diagnostic Test
1. DTC IS ACTIVE
Turn the ignition on.
With the DRBIIIT, read DTC’s.
With the DRBIIIT, erase DTC’s.
Turn the ignition off.
Turn the ignition on.
With the DRBIIIT, actuate the ABS pump motor.
Did the Pump Motor operate when actuated?
Yes >> Go To 10
No >> Go To 2

2. FUSE OPEN - PUMP MOTOR CIRCUIT
Turn the ignition off.
Remove and inspect the ABS Pump Motor fuse.
Is the Fuse open?
Yes >> Go To 3
No >> Go To 5

5 - 168 BRAKES - ABS - ELECTRICAL DIAGNOSTICS DR/DH
PUMP MOTOR CIRCUIT OPEN — 67 (CONTINUED)

3. FUSED B(+) CIRCUIT INTERMITTENTLY SHORT
Ensure the Pump Motor connector is secure.
Visually inspect the Fused B(+) circuit in the wiring harness from the ABS PUMP fuse to the CAB harness connector.
Look for any signs of an intermittent short to ground.
Is the wiring harness OK?
Yes >> Go To 4
No >> Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

4. FUSED B(+) CIRCUIT SHORTED TO GROUND
Disconnect the CAB harness connector.
Ensure the ABS Pump Motor connector is secure.
Measure the resistance of the Fused B(+) circuit to ground.
Is the resistance above 5.0 ohms?
Yes >> Replace the Controller Anti-Brake in accordance with the service manual. Refer to the symptom
*Replacing the Controller Anti-Lock Brake for additional information
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No >> Repair the Fused B(+) circuit short to ground.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

5. FUSED B(+) CIRCUIT OPEN
Remove the ABS PUMP Fuse.
Disconnect the CAB harness connector.
Measure the resistance of the Fused B (+) circuit between the ABS PUMP Fuse Terminal and the CAB harness
connector.
Is the resistance below 5.0 ohms?
Yes >> Go To 6
No >> Repair the open in the Fused B(+) circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

6. NO B+ SUPPLY TO FUSE
Turn the ignition on.
Measure the voltage of the B(+) supply at the ABS PUMP Fuse terminal.
Is the voltage above 11 volts?
Yes >> Go To 7
No >> Repair the B(+) Supply circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
DR/DH BRAKES - ABS - ELECTRICAL DIAGNOSTICS 5 - 169
PUMP MOTOR CIRCUIT OPEN — 67 (CONTINUED)

7. ABS PUMP MOTOR INOPERATIVE
Turn the ignition off.
Disconnect the ABS Pump Motor connector.
Connect a 10 gauge jumper wire between ABS Pump Motor Fused B(+) circuit and a 40 Amp Fused B(+) circuit.
Connect a 10 gauge jumper wire between ABS Pump Motor ground circuit and ground.
Monitor ABS Pump Motor operation.
Is the ABS Pump Motor operating?
Yes >> Go To 8
No >> Replace the ABS Pump Motor/Hydraulic Control Unit assembly.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

8. GROUND CIRCUIT OPEN
Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance of the CAB Ground circuits.
Is the resistance below 5.0 ohms?
Yes >> Go To 9
No >> Repair the open in the Ground circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

9. GROUND CIRCUIT HIGH RESISTANCE
Make sure the ABS Pump Motor connector is secure.
Turn the ignition on.
With the DRBIIIT, enable ABS Pump Motor actuation.
NOTE: NOTE: ABS Pump Motor will not operate, but voltage will be applied.
Measure the voltage drop across the ABS Ground circuit connection, with ABS Pump Motor actuation enabled.
Is the voltage below 0.1 volt?
Yes >> Replace the Controller Anti-Lock Brake in accordance with the service manual.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No >> Repair the high resistance in the Ground circuit.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)

5 - 170 BRAKES - ABS - ELECTRICAL DIAGNOSTICS DR/DH
PUMP MOTOR CIRCUIT OPEN — 67 (CONTINUED)
10. WIRING HARNESS INSPECTION
Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
Make sure the Pump Motor connecter is secure.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes >> Repair the Left Front Wheel Speed Sensor Signal circuit for a short to voltage.
Perform ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES/ELECTRICAL - DIAGNOSIS AND
TESTING)
No >> Test Complete.

 

Thanks...but what is a DRBIII?

I was read this http://www.absfixer.com/ , and emailed them and they said if I send them my ABS module they can fix it for $150 + shipping. Anyone comfortable with that route as a solution?

 

It probably threw the code when you pulled the fuse.

 

nope, the code was there and then I pulled the fuse...hmmm