PRE-RELEASE
DTC C0720
| DTC C0720 |
| Diagnostic Instructions |
| • |
Perform the
Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
|
|
| • |
Review
Strategy Based Diagnosis
for an overview of the diagnostic approach.
|
|
| • |
Diagnostic Procedure Instructions
provides an overview of each diagnostic category.
|
|
| DTC Descriptor |
DTC C0720 71
Engine Torque Management Feedback Signal Invalid Data
| Circuit/System Description |
The suspension control module receives high speed controller area network (CAN) message inputs from the engine control module (ECM) identifying the actual engine torque. The suspension control module utilizes this signal to control the vehicle ride characteristics.
| Conditions for Running the DTC |
System voltage is between 9-16 V
| Conditions for Setting the DTC |
The suspension control module received invalid serial data from the ECM.
| Action Taken When the DTC Sets |
The electronic suspension control is disabled for the duration of the ignition cycle.
| Conditions for Clearing the DTC |
| • |
The condition for setting the DTC is no longer present.
|
|
| • |
A history DTC will clear after 41 consecutive malfunction-free ignition cycles.
|
|
| Reference Information |
Schematic Reference
Electronic Suspension Control Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Electronic Suspension Control Description and Operation
Electrical Information Reference
| • |
Circuit Testing
|
|
| • |
Connector Repairs
|
|
| • |
Testing for Intermittent Conditions and Poor Connections
|
|
| • |
Wiring Repairs
|
|
Scan Tool Reference
Control Module References for scan tool information
| Circuit/System Testing |
| 1. |
Verify that no DTCs are present in the ECM.
|
|
| 2. |
If any DTC is present, refer to
Diagnostic Trouble Code (DTC) List - Vehicle
to diagnose that DTC prior to this diagnostic.
|
|
| 3. |
Replace the K19 Suspension Control Module and verify the DTC does not reset.
|
|
| 4. |
If the DTC resets replace the K20 Engine Control Module.
|
|
| Repair Instructions |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for control module replacement, setup and programming
