DTC C0720
Diagnostic Instructions
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
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Testing
| 1. |
Verify that no DTCs are
present in the ECM. |
| 2. |
Replace the K19 Suspension
Control Module and verify the DTC does not reset. |
| ⇒ |
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.
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