PRE-RELEASE
DTC C1207-C1210, C1221-C1228, or C1232-C1235
| DTC C1207-C1210, C1221-C1228, or C1232-C1235 |
| 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 Descriptor |
DTC C1207 00
Left Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1208 00
Right Front Wheel Speed Sensor Circuit High Input Malfunction
DTC C1209 00
Left Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1210 00
Right Rear Wheel Speed Sensor Circuit High Input Malfunction
DTC C1221 00
Left Front Wheel Speed Sensor Circuit Malfunction
DTC C1222 00
Right Front Wheel Speed Sensor Circuit Malfunction
DTC C1223 00
Left Rear Wheel Speed Sensor Circuit Malfunction
DTC C1224 00
Right Rear Wheel Speed Sensor Circuit Malfunction
DTC C1225 00
Left Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1226 00
Right Front Wheel Speed Sensor Circuit Performance Malfunction
DTC C1227 00
Left Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1228 00
Right Rear Wheel Speed Sensor Circuit Performance Malfunction
DTC C1232 00
Left Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1233 00
Right Front Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1234 00
Left Rear Wheel Speed Sensor Circuit Low Input Malfunction
DTC C1235 00
Right Rear Wheel Speed Sensor Circuit Low Input Malfunction
| Circuit/System Description |
The wheel speeds are recorded by active wheel speed sensors and coding rings made up of permanent magnets. Each wheel speed sensor receives a reference voltage of 12 V from the electronic brake control module. Wheel speed sensors emit an AC voltage of 4 - 18 mA on the control module signal circuit. When the wheels rotate, the electronic brake control module uses the frequency of the square signal to calculate the wheel speed.
| Conditions for Running the DTC |
Ignition ON
| Conditions for Setting the DTC |
A supervised periodic message that includes the wheel speed serial data has not been received.
| Action Taken When the DTC Sets |
Specific subsystems will not function or operate in degraded mode.
| Conditions for Clearing the DTC |
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The DTC is cleared when a diagnostic test is run and passes.
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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 Verification |
Ignition ON, observe the scan tool EBCM Wheel Speed Sensor parameters. The readings for all sensors should indicate the same speed when driving in a straight line at a speed greater than 20 km/h (13 mph).
| Circuit/System Testing |
| 1. |
Ignition ON
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| 2. |
Verify that DTC C0035, C0040, C0045, or C0050 is no set.
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| 3. |
If any of the stated DTCs is sets, see
DTC C0035, C0040, C0045 or C0050
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| 4. |
If none of the DTCs is set:
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| 5. |
Replace the K17 electronic brake control module.
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| 6. |
Verify that the DTCs C1207 - C1210, C1221 - C1228, or C1232 - C1235 are not set when the vehicle is manoeuvred under the conditions specified in 'Conditions for running of diagnostic trouble codes (DTCs)'
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| 7. |
If any of the DTCs is set:
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| 8. |
Replace the control device that set the DTC.
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| 9. |
If none of the DTCs are set:
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| 10. |
All OK
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| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for module replacement, setup and programming
