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Need diagram for ABS / Trac control

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Old Sep 22, 2005 | 05:19 AM
  #1  
viper punisher's Avatar
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From: Granbury TX
Default Need diagram for ABS / Trac control

I have a code that I cant get rid of (C1214 HC). I have tried all the usual fixes and I want to know what modules are involved. I have tried everything and want to go to the next step without going to the dealer.
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Old Sep 22, 2005 | 07:57 AM
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From: Frankfort Illinois
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Not a mechanic but that code is for "Sol valve Relay Contact or Coil CKT open"
Hope that helps
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Old Sep 22, 2005 | 07:48 PM
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You are not alone. I have been living with this for over a year. Took it to the stealership and they said it was the BCM. Wanted over $950 for the part. I finally took it to another shop and had the BCM swapped out with no fix. They said they were stumped and that it probably was a simple fix somewhere in the wiring. I have followed Bill Curlees advise and cleaned my ground connections and still get the lights. I wonder why shops cannot locate the problem. They don't seem to know what to do.
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Old Sep 22, 2005 | 09:42 PM
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From: Granbury TX
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Yeah I have taken every connector apart and they all look brand new. My car doesn't see rain or water much, so I dont have any corrosion issues. I have looked over as much wiring as I could to look for chaffed wires, but nothing.
I am stumped!
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Old Sep 22, 2005 | 10:30 PM
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Here's the diagnostic from the manual.

DTC C1214

Circuit Description


The system relay is energized when the ignition is ON. The system relay supplies voltage to the solenoid valves and the pump motor. This voltage is referred to as the system voltage.

The electronic brake control module (EBCM) controls each solenoid valve by grounding the solenoid.

The EBCM controls the pump motor by grounding the control circuit. The pump serves 2 purposes:

Transfers brake fluid from the brake calipers to the master cylinder reservoir during pressure decrease events.
Transfers brake fluid from the master cylinder reservoir to the brake calipers during pressure increase events.

Conditions for Running the DTC
The ignition voltage is greater than 10.5 volts.
The system relay is commanded ON.

Conditions for Setting the DTC
The system voltage is less than 8 volts for 0.23 seconds.

Action Taken When the DTC Sets
If equipped, the following actions occur:

The EBCM disables the ABS/TCS/VSES for the duration of the ignition cycle.
The DRP does not function optimally.
The ABS indicator turns ON.
The Traction Control and Active Handling indicator turns ON.
The DIC displays the following messages:
Service ABS
Service Traction System
Service Active Handling

Conditions for Clearing the DTC
The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids
The system relay is integral to the EBCM. The relay is not serviceable.

Test Description
The number below refers to the step number on the diagnostic table.

2. Determines whether the DTC is current.

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