C0620

DTC C0615, C0620, C0625, or C0630

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC C0615 01
- Left Front Position Sensor Circuit Short to Battery

DTC C0615 06
- Left Front Position Sensor Circuit Short to Ground or Open

DTC C0615 55
- Left Front Position Sensor Expected Number Of Transitions Not Reached

DTC C0615 5A
- Left Front Position Sensor Circuit Signal Invalid

DTC C0620 01
- Right Front Position Sensor Circuit Short to Battery

DTC C0620 06
- Right Front Position Sensor Circuit Short to Ground or Open

DTC C0620 55
- Right Front Position Sensor Expected Number Of Transitions Not Reached

DTC C0620 5A
- Right Front Position Sensor Circuit Signal Invalid

DTC C0625 01
- Left Rear Position Sensor Circuit Short to Battery

DTC C0625 06
- Left Rear Position Sensor Circuit Short to Ground or Open

DTC C0625 55
- Left Rear Position Sensor Expected Number Of Transitions Not Reached

DTC C0625 5A
- Left Rear Position Sensor Circuit Signal Invalid

DTC C0630 01
- Right Rear Position Sensor Circuit Short to Battery

DTC C0630 06
- Right Rear Position Sensor Circuit Short to Ground or Open

DTC C0630 55
- Right Rear Position Sensor Expected Number Of Transitions Not Reached

DTC C0630 5A
- Right Rear Position Sensor Circuit Signal Invalid

Circuit/System Description

The Electronic Suspension Control module supplies a 5-volt reference signal to each suspension position sensor. The suspension position sensors supply a signal of 0.35-4.75 V to the Electronic Suspension Control module which represents the position between the body and the wheel. The sensors are also grounded through the Electronic Suspension Control module.

Conditions for Running the DTC

* Battery voltage is between 9-16 V.

* Ignition is ON.

Conditions for Setting the DTC

* The DTC is set when the Electronic Suspension Control module measures a position sensor signal less than 0.35 V or greater than 4.75 V for more than 1 s while the vehicle is operated under normal driving conditions.

* The fault is detected during 3 consecutive ignition cycles, or during the same ignition cycle after clearing the DTC with a scan tool.

Action Taken When the DTC Sets

* The Electronic Suspension Control module will enter the speed dependent damping mode.

* Both left and right normal force outputs will be set to the default output states.

* The Electronic Suspension Control module sends a message to the instrument panel cluster to display SERVICE RIDE CONTROL message.

Conditions for Clearing the DTC

A history DTC will clear after 40 consecutive ignition cycles if the condition for the malfunction is no longer present.

Reference Information

Schematic Reference

Electronic Suspension Control Schematics Electrical Diagrams

Connector End View Reference

Component Connector End Views Fuel Pump and Level Sensor Assembly - Primary

Description and Operation

Electronic Suspension Control Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Position Sensor Data parameters while the vehicle is jounced. The readings should vary between 0.35-4.75 V.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate suspension position sensor.

2. Test for less than 10 ohms between the low reference circuit terminal C and ground.

• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K19 Suspension Control Module.

3. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal A and ground.

• If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K19 Suspension Control Module.

• If greater than the specified range, test the reference circuit for a short to voltage. If the circuit tests normal, replace the K19 Suspension Control Module.

4. Verify the scan tool position sensor parameter is less than 0.3 V.

• If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K19 Suspension Control Module.

5. Install a 3 A fused jumper wire between the signal circuit terminal B and the 5 V reference circuit terminal A. Verify the scan tool position sensor parameter is greater than 4.7 V.

• If less that the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal replace the K19 Suspension Control Module.

6. If all circuits test normal, replace the appropriate suspension position sensor.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair

* Electronic Suspension Front Position Sensor Replacement Electronic Suspension Front Position Sensor Replacement

* Electronic Suspension Rear Position Sensor Replacement Electronic Suspension Rear Position Sensor Replacement

* Control Module References Control Module References for Suspension Control Module replacement, programming and setup.