ABS Light On - Codes read 1095 and 1235

[Cre8ive1]

ABS Light On - Codes read C1095 and C1230

My light has been on for a while and now I'm selling the car but want to fix the ABS first.
Here's what I know/ have done:

Codes read C1095 and C1230
Cleared the codes and they came back.

1) Measured resistance of Front and Rear sensors at the sensor connectors and at the control module connector.
Left= 2.5K ohms
Right = 2.4K ohms
Rear = 1.9K ohms
I replaced the rear connector just in case...
I replaced the Brake Position Switch just in case
2) I've spun the front wheels and the resistance change.
3) I have 12V on pins 9 + 25 at the module connector
4) I have ground on pins 8 + 24 at the module connector
5) I have 12V and ground at the connector going to the pump motor
6) I applied 12V from a battery charger to the motor connector and the pump motor works.
(5 + 6 with the pump motor connector disconnected from the module)

7) Brakes are a little 'spongy' with the car running, but pump up harder when it's not running.
I'm going to bleed the brakes this morning and see if that makes a difference. The only other thing I can think of is the the 12v output from the module is not supplying enough current to drive the pump motor and I need to replace the module.

Any help/ ideas would be greatly appreciated.
Thanks,
Kevin

 

[Bedrck47]

http://www.expeditionforum.com/f37/member-signature-requirement-25062/#post204670

 

[Bedrck47]

Sensor

Connect EEC-IV 60-Pin Breakout Box to the EHCU with ABS Adapter Cable.
Disconnect the suspect anti-lock brake sensor.
Check the harness for short to ground.
NOTE: Use 88 Digital Multimeter with the minimum resistance hold feature enabled for this test.

Monitor the resistance between EEC-IV 60-Pin Breakout Box pins and ground as follows:

Sensor Breakout Box Pins Circuits
Left front anti-lock brake sensor 12 and 4 521 (TN/OG) and 522 (TN/BK)
Right front anti-lock brake sensor 13 and 5 514 (YE/RD) and 516 (YE/BK)
Rear anti-lock brake sensor 14 and 6 523 (RD/PK) and 519 (LG/BK)


Drive over rough roads at various speeds.
If there is continuity between either circuit and ground, repair the circuit for a short to ground.
Check harness for open circuit.
NOTE: Connect jumper securely to the suspect sensor connector.

Connect a jumper between the two pins on the suspect sensor connector.
NOTE: Use 88 Digital Multimeter with the maximum resistance hold feature enabled for this test.

Monitor the resistance between EEC-IV 60-Pin Breakout Box pins as follows:

Sensor Breakout Box Pins Circuits
Left front anti-lock brake sensor 12 and 4 521 (TN/OG) and 522 (TN/BK)
Right front anti-lock brake sensor 13 and 5 514 (YE/RD) and 516 (YE/BK)
Rear anti-lock brake sensor 14 and 6 523 (RD/PK) and 519 (LG/BK)


Drive over rough roads at various speeds.
If there is open circuit detected between pins, repair the circuit(s) for an open circuit.
Check suspect sensor electrical connector.
NOTE: Use 88 Digital Multimeter with the maximum resistance hold feature enabled for this test.

Monitor the resistance between suspect anti-lock brake sensor terminals while wiggling the electrical connector:

Sensor Resistance
Front
4x2 4000 ohms
4x4 500 ohms
Rear
4x2 or 4x4 3500 ohms


If the resistance is above specifications, install a new anti-lock brake sensor.
NOTE: Use 88 Digital Multimeter with the minimum resistance hold feature enabled for this test.

Monitor the resistance between suspect anti-lock brake sensor pins (component side) while wiggling the electrical connector:

Sensor Resistance
Front
4x2 2000 ohms
4x4 300 ohms
Rear
4x2 or 4x4 800 ohms


If the resistance is below specifications, install a new anti-lock brake sensor.
NOTE: Use 88 Digital Multimeter with the minimum resistance hold feature enabled for this test.

Monitor the resistance between an anti-lock brake sensor pin (component side) and ground on the highest resistance scale of the meter, while wiggling the electrical connector.
If the meter shows anything but open circuit, install a new anti-lock brake sensor.