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 Descriptors

DTC C0670 02

Left Front Acceleration or Position Sensor Circuit Short to Ground

DTC C0670 05

Left Front Acceleration or Position Sensor Circuit High Voltage/Open

DTC C0670 0A

Left Front Acceleration or Position Sensor Circuit Too Slow Transitions

DTC C0675 02

Right Front Acceleration or Position Sensor Circuit Short to Ground

DTC C0675 05

Right Front Acceleration or Position Sensor Circuit High Voltage/Open

DTC C0675 0A

Right Front Acceleration or Position Sensor Circuit Too Slow Transitions

Diagnostic Fault Information

Circuit	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
Left Front Wheel Acceleration Sensor 5V Reference	C0870 03	C0670 05	C0870 07	-
Right Front Wheel Acceleration Sensor 5V Reference	C0870 03	C0675 05	C0870 07	-
Left Front Wheel Acceleration Sensor Signal	C0670 02	C0670 05	C0670 05, C0870 07	C0670 0A
Right Front Wheel Acceleration Sensor Signal	C0675 02	C0675 05	C0675 05, C0870 07	C0675 0A
Left Front Wheel Acceleration Sensor Low Reference	-	C0670 05	-	-
Right Front Wheel Acceleration Sensor Low Reference	-	C0675 05	-	-

Circuit/System Description

The suspension control module supplies a 5 V reference voltage and a low reference to each vertical wheel acceleration sensor. The vertical wheel acceleration sensors supply a signal of 0.5-4.5 V to the suspension control module.

Conditions for Running the DTC

System voltage is between 9-16 V.

Conditions for Setting the DTC

C0670 02 and C0675 02

The signal voltage is less than 0.5 V for 1.5 s.

C0670 05 and C0675 05

The signal voltage is greater than 4.5 V for 1.5 s.

C0670 0A and C0675 0A

•	The number of signal changes is less than specified value for 2.5 s.

•	Vehicle speed is greater than 30 km/h (19 mph).

Action Taken When the DTC Sets

•	The electronic suspension control is disabled for the duration of the ignition cycle.

•	The driver information center displays the SERVICE SUSPENSION SYSTEM message.

Conditions for Clearing the DTC

•	A present DTC will clear on the next consecutive malfunction-free ignition cycle.

•	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 Verification

Ignition ON, observe the scan tool Vertical Wheel Acceleration parameters. The readings should be 0 m/s² when the vehicle is parked on a level surface.

Circuit/System Testing

1.	Ignition ON, verify that DTC C0870 is not present.

2.	If the DTC is present, refer to DTC C0870 to diagnose that DTC prior to this diagnostic.

3.	Ignition OFF, disconnect the harness connector at the appropriate vertical wheel acceleration sensor.

4.	Test for less than 5 Ω between the low reference circuit terminal 3 and ground.

5.	If greater than the specified value, test the low reference circuit for short to voltage or an open/high resistance. If the circuit tests normal, replace the K19 Suspension Control Module.

6.	Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 1 and ground.

7.	If less than the specified value, 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.

8.	If greater than the specified value, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K19 Suspension Control Module.

9.	Test for 4.8-5.2 V between the signal circuit terminal 2 and ground.

10.	If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K19 Suspension Control Module.

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

12.	If all circuits test normal, replace the vertical wheel acceleration sensor and verify the DTC does not reset. If the DTC resets, replace the K19 Suspension Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

•	Electronic Suspension Front Vertical Accelerometer Replacement - Lower

•	Control Module References for suspension control module replacement, setup, and programming