Workshop Manuals Factory service & repair Vauxhall
Vauxhall Astra J18 · Suspension
18 · Steering & suspension

DTC C0870

Make
Vauxhall
Model
Astra J
Section
Electronic Suspension Control › Other Information › DTC C0870
SuspensionDTC C0870

DTC C0870

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 C0870 03: Control Module Voltage Reference Output Circuit Low Voltage
DTC C0870 07: Control Module Voltage Reference Output Circuit High Voltage

Diagnostic Fault Information



Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance

5V Reference
C0870 03
C0595 05, C0600 05, C0605 05, C0670 05, C0675 05
C0870 07
-

Low Reference
-
C0595 05, C0600 05, C0605 05, C0670 05, C0675 05
-
-
 

Circuit/System Description

The suspension control module supplies a 5 V reference voltage and a low reference to each body acceleration sensor and wheel acceleration sensor. The body acceleration sensors and 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

C0870 03

The suspension control module detected a short to ground on the 5 V reference circuit for 1.5 seconds

C0870 07

The suspension control module detected a short to voltage on the 5 V reference circuit for 1.5 seconds

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


Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Suspension Position Sensor 5 V Reference parameter. The reading should be 5 V.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connectors at all 5 vertical body and wheel acceleration sensors.
2. Ignition ON, test for 4.8-5.2 V between one of the 5 V reference circuits terminal 1 and ground.
⇒ If less than the specified range, test the 5 V reference circuit for a short to ground. If the circuit tests normal, replace the K19 Suspension Control Module.
⇒ 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.
3. Test for 4.8-5.2 V between all 5 vertical body and wheel acceleration sensor signal circuit terminals 2 and ground.
⇒ 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.
⇒ 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.
4. Ignition OFF, connect each component associated with the 5 V reference circuit one at a time while observing the scan tool Suspension Position Sensor 5 V Reference parameter. Verify the reading is 5 V.
⇒ If not the specified value when a component is connected, replace the component.

Repair Instructions

•  Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
•  Control Module References for suspension control module replacement, setup and programming

Parts & tools for this job For Vauxhall Astra

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