Chevrolet Trax: Driver information center display malfunction
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.
Circuit/System Description
The Instrument Cluster contains a Driver Information Center which displays
vehicle information such as the
engine coolant temperature, fuel level, vehicle speed, and other information
based on the information received
from various modules on the vehicle's serial data bus. The Driver Information
Center illuminates a combination
of indicators and messages to display the status of various vehicle systems.
Reference Information
Schematic Reference
Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
Instrument Cluster 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.
- Verify no DTC is set.
Diagnose any DTCs first. Refer to Diagnostic Trouble Code (DTC) List -
Vehicle .
- Verify all indicators except the engine malfunction indicator illuminate
and turn off as commanded when
performing the All Indicators test with the scan tool.
- If any indicators do not illuminate and turn off as commanded
Replace the P16 Instrument Cluster.
- If all indicators respond properly
- Verify all segments illuminate when performing the Driver Information
Center Segments test with the
scan tool.
- If any segments do not illuminate
Replace the P16 Instrument Cluster.
- If all segments illuminate properly
- All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for instrument cluster or ECM replacement, programming,
and setup.
ENGINE OIL PRESSURE INDICATOR MALFUNCTION
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 P0520
Engine Oil Pressure Switch Circuit
Diagnostic Fault Information
Typical Scan Tool Data
ECM - Engine Oil Pressure Switch
Circuit/System Description
The engine oil pressure switch is a normally closed switch that opens with
the proper oil pressure. With the
ignition switch turned ON and the engine not running, the engine control module
(ECM) should detect a low signal voltage input. With the engine running, the
engine oil pressure switch opens and the ECM should detect a
high signal voltage input. When the oil pressure is low, the ECM sends a message
via serial data to the body
control module (BCM). The BCM then sends a message via serial data to the
instrument cluster requesting the
engine oil pressure indicator turned ON.
Conditions for Running the DTC
The engine is running.
Conditions for Setting the DTC
- The ECM detects that the engine oil pressure switch signal circuit is
pulled low.
- The above condition is present for greater than 10 sec.
Action Taken When the DTC Sets
The instrument cluster illuminates the service vehicle soon indicator and the
oil pressure low indicator.
Conditions for Clearing the DTC
The DTC becomes history when the conditions for setting the DTC are no longer
present.
Diagnostic Aids
DTC P0520 can set due to inadequate engine oil pressure. This can be an
indication of mechanical engine issues
causing lower than expected engine oil pressure.
Reference Information
Schematic Reference
Instrument Cluster Schematics (Encore), Instrument Cluster Schematics (Trax)
Connector End View Reference
WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS -
INDEX - ENCORE WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT
CONNECTOR END VIEWS - INDEX - TRAX
Description and Operation
- Instrument Cluster Description and Operation
- Indicator/Warning Message Description and Operation
- Driver Information Center (DIC) Description and Operation (base
Instrument Cluster), Driver
Information Center (DIC) Description and Operation (uplevel Instrument
Cluster)
Electrical Information Reference
- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions (LUV)
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Ignition ON.
- Command the All Indicators test ON and OFF with the scan tool, verify
that the engine oil pressure
indicator turns ON and OFF.
- If the engine oil pressure indicator does not turn ON or OFF as
commanded
Replace the P16 Instrument Cluster.
- If the engine oil pressure indicator turns ON and OFF as commanded
- Verify the scan tool Engine Oil Pressure parameter is Low.
Refer to Circuit/System Testing.
- Engine running.
- Verify actual engine oil pressure is within specified range. Refer to
Oil Pressure Diagnosis and Testing in
Displays and Gauges Component Replacement Reference.
- Verify the scan tool Engine Oil Pressure parameter is OK.
Refer to Circuit/System Testing.
- All OK.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the B37 Engine Oil
Pressure Switch, ignition ON.
- Verify the scan tool Engine Oil Pressure Switch parameter is OK.
If not OK
- Ignition OFF, disconnect the harness connector at the K20 Engine Control
Module.
- Test for infinite resistance between the signal circuit terminal 1 (or
A) and ground.
- If less than infinite resistance, repair the short to ground on the
circuit.
- If infinite resistance, replace the K20 Engine Control Module.
- If OK
- Install a 3 A fused jumper wire between the signal circuit terminal 1 (or
A) and ground.
- Verify the scan tool Engine Oil Pressure Switch parameter is Low.
- Ignition OFF, disconnect the harness connector at the K20 Engine Control
Module, ignition ON.
- Test for less than 1 V between the signal circuit and ground.
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V
- Test for less than 2 ohms in the signal circuit end to end.
- If 2 ohms or greater, repair the open/high resistance in the circuit.
- If less than 2 ohms, replace the K20 Engine Control Module.
- If Low
- Test or replace the B37 Engine Oil Pressure Switch.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
- Displays and Gauges Component Replacement Reference
- Control Module References for ECM replacement, programming and setup
READ NEXT:
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.
Diag
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.
Diag
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.
Diag
SEE MORE:
Removal Procedure
Remove the transmission. Refer to Transmission Replacement .
Fig. 23: Actuator Cylinder Pipe Connector Elbow And Clip
Remove the clutch actuator cylinder pipe connector elbow clip (1) from
the clutch actuator elbow.
Remove the connector elbow (2) from the clutch actuator
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
D