Circuit Description
Voltage is supplied to the electronic suspension control (ESC) module in the battery positive voltage circuit and the ignition voltage circuit. The ESC module monitors the supplied voltage to determine if it is within a valid operating range.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0896 Device Voltage Range/Performance
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
| • | The DTC is set when the battery voltage is outside the normal range of 9-15.5 volts. |
| • | The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with the scan tool. |
Action Taken When the DTC Sets
DTC C0896 disables the ability to set most other ESC DTCs.
Conditions for Clearing the MIL/DTC
| • | The scan tool can be used to clear the DTC. |
| • | The DTC is saved as history when the ESC module no longer sees battery voltage outside the normal range of 9-15.5 volts. The DTC will clear if the fault does not return after 50 consecutive ignition cycles. |
Diagnostic Aids
DTC C0896 may set when the vehicle is placed on a battery charger, on fast charge, for a long period of time. It may also be set by an intermittent charging system malfunction.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This test determines whether the malfunction is in the supply voltage or the ESC module.
-
Checks for high resistance, a short to ground, or an open in the battery positive voltage circuit.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Suspension Controls Schematics | ||||
Measure the voltage in the electronic suspension control (ESC) module battery positive voltage circuit. Does the voltage the measure within the specified range? | 9-15.5 V | Go to Step 3 | Go to Step 2 | |
Test for high resistance, a short to ground or an open in the battery positive voltage circuit of the ESC module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 7 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | |
3 |
Does the DTC reset? | -- | Go to Step 4 | Go to Step 6 |
4 | Inspect for poor connections at the harness connector of the ESC module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 7 | Go to Step 5 |
5 | Replace the ESC module. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | -- | Go to Step 7 | -- |
6 | Inspect for poor connections at the harness connector of the ESC module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 7 | Go to Diagnostic Aids |
7 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
