DTC C0870
Diagnostic Instructions
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
|
