PRE-RELEASE
DTC C0110
| DTC C0110 |
| Diagnostic Instructions |
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Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
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Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
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Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
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| DTC Descriptors |
DTC C0110 00
Pump Motor Circuit Malfunction
DTC C0110 04
Pump Motor Circuit Open
DTC C0110 61
Pump motor fixed
| Diagnostic Fault Information |
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
| B+ | C0110 00, | C0110 00, | - | C0110 00 - 61 |
| Ground | - | C0110 00 | - | - |
| Component | Condition | DTCs | |||||||||
| Pump Motor |
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C0110 61 | |||||||||
| Circuit/System Description |
The pump motor is an integral part of the brake pressure modulation valve and the pump motor relay is integrated in the electronic brake control module (EBCM). The pump motor relay is not activated during normal system operation. When the ABS, traction control or stability control operation is required, the EBCM activates the pump motor relay and turns the pump motor ON.
| Conditions for Running the DTC |
Ignition ON.
| Conditions for Setting the DTC |
C0110 00
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An unintentional pump motor activation is detected in 1.8 seconds.
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An open/high resistance is detected on the pump motor B+ circuit in 1.8 seconds.
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C0110 04
An unintentional pump motor activation is detected in 1.8 seconds.C0110 61
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A faulty pump motor is detected.
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A short to ground or an open/high resistance is detected on the pump motor B+ circuit in 1.8 seconds.
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| Action Taken When the DTC Sets |
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The ABS indicator turns ON.
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The brake warning indicator turns ON.
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The traction control/stability control-active indicator turns ON.
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The EBCM disables the ABS, traction control, and stability control for the duration of the ignition cycle.
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| Conditions for Clearing the DTC |
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The condition for generation of a DTC is no longer present.
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The DTC in the history is cleared after 40 consecutive fault-free ignition cycles have taken place.
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| Reference Information |
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation
Electrical Information Reference
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Testing |
| 1. |
Ignition OFF and all vehicle systems OFF, undo the connector from the EBCM K17. It may take up to 2 minutes for all vehicle systems to power down.
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| 2. |
Test for less than 10 Ω between the ground circuit terminal 16 and ground.
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| 3. |
If the reading is 10 Ω or higher:.
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| 3.1. |
Ignition OFF
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| 3.2. |
Test for less than 2 Ω in the ground circuit, end to end.
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| 3.3. |
If the reading is 2 Ω or higher, rectify open/high resistance in the circuit.
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| 3.4. |
If the reading is less than 2 Ω or higher, rectify open/high resistance at connection to ground
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| 4. |
If the reading is less than 10 Ω:.
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| 5. |
Verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
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| 6. |
If the test lamp does not come on and the circuit fuse is OK:
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| 6.1. |
Ignition OFF
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| 6.2. |
Test for less than 2 Ω in the B+ circuit, end to end
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| 6.3. |
If the reading is 2 Ω or higher, rectify open/high resistance in the circuit.
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| 6.4. |
If the reading is less than 2 Ω or higher, verify that the fuse is not open and that there is power to the fuse
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| 7. |
If the test lamp does not come on and the fuse is open:
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| 7.1. |
Test for infinite resistance between B+ and ground
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| 7.2. |
If the reading is less than infinite, rectify short circuit to ground on the circuit.
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| 7.3. |
If the resistance reading is infinite, replace Q5 brake pressure modulation valve
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| 8. |
If the test lamp illuminates:
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| 9. |
Disconnect the K17 electronic brake control module from Q5 brake pressure modulation valve.
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| 10. |
Connect a test lamp between the pins for pump motor on the K17 electronic brake control module.
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Connect the cable contact to the K17 electronic brake control module.
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| 12. |
Ignition ON. |
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| 13. |
Verify that the test lamp is switched ON and OFF when the pump motor voltage is increased using the diagnostic tool.
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| 14. |
If the test lamp does not switch ON and OFF:
Replace the K17 electronic brake control module. |
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| 15. |
If the test lamp switches ON and OFF:
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| 16. |
Replace Q5 brake pressure modulation valve.
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the repair.
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Brake Pressure Modulator Valve Replacement
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Control Module References
for EBCM replacement, programming and setup
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