engine CHEVROLET AVEO 2002 Service Repair Manual

The control module stores the DTC information into memory when the diagnostic runs and fails.
The malfunction indicator lamp (MIL) will not illuminate.
The control module records the operating conditions at the time the diagnostic fails. The control module
stores this information in the Failure Records.
The driver information center, if equipped, may display a message.
Conditions for Clearing the DTC
A current DTC Last Test Failed clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other
non-emission related diagnostic.
Clear the DTC with a scan tool.
Test Description
The numbers below refer to the step numbers on the diagnostic table.
3: This step attempts to determine if the intermittent fault is a connector.
4: This step attempts to determine the location of the intermittent fault.
DTC P0464
StepActionYesNo
Schematic Reference: Instrument Cluster Schematics or
Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views

1
Did you perform the Diagnostic System Check - Instrument
Cluster?
Go to Step
2
Go to Diagnostic
System Check -
Instrument Cluster

2
1. Start the engine.
2. Observe the DTC Information with a scan tool.
Are DTCs P0461, P0462, and P0463 also set?Go to
Dia
gnostic
Trouble
Code
(DTC)
List Go to Step 3
3
Observe the Fuel Level Sensor voltage parameter with a scan
tool while moving the fuel level sensor connector and the
engine control module (ECM) connector. Refer to Inducing
Intermittent Fault Conditions in Wiring Systems.
Does the scan tool indicate an abrupt change in value?Go to Step
5
Go to Step 4
4
Observe the fuel level sensor voltage with a scan tool while
moving the wiring harness between the fuel level sensor
connector and the ECM. Refer to Inducing Intermittent
Fault Conditions in Wiring Systems.
Does the scan tool indicate an abrupt change in value?Go to Step
6
Go to Intermittent
Conditionsin Engine
Controls
Repair the connector terminal as necessary. Refer to

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
Microsoft
Friday, July 31, 2009 1:07:02 PMPage 26 © 2005 Mitchell Repair Information Company, LLC.

SYMPTOMS - INSTRUMENT PANEL, GAGES AND CONSOLE
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
Clock Malfunction
Engine Coolant Temperature Gage Inaccurate or Inoperative
Fuel Gage Inaccurate or Inoperative
Speedometer and/or Odometer Inaccurate or Inoperative
Chime Inoperative (Seat Belt) Seat belt
Door Open Warning Chime Inoperative
Key Reminder Chime Inoperative
DOOR OPEN WARNING CHIME INOPERATIVE
Door Open Warning Chime Inoperative
5Connector Repairs in Wiring Systems.
Did you complete the repair?Go to Step
7
-
6
Repair the harness/wiring as necessary. Refer to Wiring
Repairs in Wiring Systems.
Did you complete the repair?Go to Step
7
-
7
1. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Operate the vehicle within the Conditions for Running
the DTC. You may also operate the vehicle within the
conditions that you observed from the Freeze
Frame/Failure Records.
Did the DTC fail this ignition?
Go to Step
2
Go to Step 8
8Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
Go to
Dia
gnostic
Trouble
Code
(DTC)
List in
Engine
Controls -
1.6L
System OK
StepActionValuesYesNo
Inspect the chime module connector to make sure

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
Microsoft
Friday, July 31, 2009 1:07:02 PMPage 27 © 2005 Mitchell Repair Information Company, LLC.

ENGINE COOLANT TEMPERATURE GAGE INACCURATE OR INOPERATIVE
Engine Coolant Temperature Gage Inaccurate or Inoperative
3
2. Use a voltmeter to check battery voltage
available at fuses F2, F23, and EF7.
Does the voltmeter indicate the value specified?
11-14 V
Go to Step 5 Go to Step 4
4Repair the open power supply circuit for the fuse.
Is the repair complete?-System OK-
5
Use a voltmeter to check the battery voltage
available at the clock connector terminal 5.
Does the voltmeter indicate the value specified?
11-14 V
Go to Step 7 Go to Step 6
6
Repair the open circuit between the clock
connector terminal 5 and the fuse F23.
Is the repair complete?
-
System OK-
7
Turn the ignition ON.
Is battery voltage available at the clock connector
terminal 15?
-
Go to Step 9 Go to Step 8
8
Repair the open circuit between terminal 15 of
the clock connector and fuse F2.
Is the repair complete?
-
System OK-
9
Inspect continuity between terminal 6 of the
clock connector and ground.
Does the multimeter indicate the value specified?
0 ohm
Go to Step 10 Go to Step 11
10Replace the clock.
Is the repair complete?-System OK-
11
Repair the open ground circuit between terminal
6, the clock connector, and ground G202.
Is the repair complete?
-
System OK-
StepActionValuesYesNo
1
Allow the engine to cool to room temperature.
With the ignition ON, does the temperature gage
always read at the high end of the scale?
-
Go to Step 7 Go to Step 2
2
Disconnect engine control module (ECM)
electrical connector.
Does the temperature gage indicator drop to the
low end of the scale?
-
-Go to Step 3
3
Inspect for a short to ground between the ECM
and the temperature gage.
Is there a short to ground?
-
Go to Step 4 Go to Step 5
4Repair the short to ground.
Is the repair complete?-System OK-
5Replace the temperature gage. -

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
Microsoft
Friday, July 31, 2009 1:07:02 PMPage 31 © 2005 Mitchell Repair Information Company, LLC.

FUEL GAGE INACCURATE OR INOPERATIVE
Fuel Gage Inaccurate or Inoperative
Is the repair complete?System OK-
6
1. Disconnect the ECM.
2. Turn the ignition ON.
3. Check the voltage at the ECM.
Does the voltage equal the value specified?
11-14 V
Go to Step 9 Go to Step 7
7
Inspect for an open circuit between the ECM and
the temperature gage.
Is there an open circuit?
-
Go to Step 8 Go to Step 5
8
Repair the open circuit between the ECM and the
temperature gage.
Is the repair complete?
-
System OK-
9
1. Disconnect the ECM.
2. Connect a jumper wire between the ECM
connector and ground.
3. Turn the ignition ON.
Does the temperature gage move to the high end
of the scale?
-
-Go to Step 5
StepActionValuesYesNo
1
1. Connect a scan tool.
2. Check for engine control diagnostic trouble
codes (DTCs).
Are any DTCs set?
-
-Go to Step 2
2
1. Turn the ignition OFF.
2. Disconnect engine control module (ECM)
connector.
3. Remove the instrument cluster.
4. Inspect continuity between ECM fuel gage
control circuit terminal and the instrument
cluster terminal 1.
Does the ohmmeter indicate the specified value?
0 ohm
Go to Step 4 Go to Step 3
3
Repair the open circuit between the instrument
cluster connector terminal 1 and the ECM fuel
gage control circuit terminal.
Is the repair complete?
-
System OK-

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
Microsoft
Friday, July 31, 2009 1:07:02 PMPage 32 © 2005 Mitchell Repair Information Company, LLC.

SPEEDOMETER AND/OR ODOMETER INACCURATE OR INOPERATIVE
Speedometer and/or Odometer Inaccurate or Inoperative
CHIME INOPERATIVE (SEAT BELT)
Chime Inoperative (Seat Belt)
4Replace the fuel gage.
Is the repair complete?-System OK-
StepActionValuesYesNo
1
1. Connect a scan tool.
2. Inspect for engine or automatic
transmission diagnostic trouble
codes (DTCs).
Are any DTCs set?
-
Go to DTC P0722 (Non
Europe or N. American
Emissions) or DTC P0722
(European and N. American
Emissions) in Automatic
Transmission Aisin - 81-40LE Go to Step
2
2
1. Turn the ignition OFF.
2. Disconnect the engine control
module (ECM) connector.
3. Remove the instrument cluster.
4. Inspect continuity between
terminal 3 of the vehicle speed
sensor connector and the
instrument cluster connector
terminal 2.
Does the ohmmeter indicate the
specified value?
0 ohm
Go to Step 4
Go to Step
3
3
Repair the open circuit between the
instrument cluster connector terminal 2
and terminal 3 of the vehicle speed
sensor connector.
Is the repair complete?
-
System OK-
4Replace the speedometer.
Is the repair complete?-System OK-
StepActionValuesYesNo
1
Inspect the chime module connector to make sure
it is connected properly.
Is the connector disconnected or partially
disconnected?
-
Go to Step 2 Go to Step 3
2
Connect the electrical connector for the chime
module.
Is the repair complete?
-
System OK-

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
Microsoft
Friday, July 31, 2009 1:07:02 PMPage 33 © 2005 Mitchell Repair Information Company, LLC.

an instrument cluster gage connected to the VSS on the transaxle output shaft. The trip odometer can be reset to
zero at any time so that the driver can record the distance traveled from any starting point.
Fuel Gage
The fuel gage consists of an instrument cluster gage connected to a sending unit in the fuel tank.
The fuel gage indicates the quantity of fuel in the tank only when the ignition switch is turned to ON or ACC.
When the ignition is turned to LOCK or START, the pointer may come to rest at any position.
Temperature Gage
The temperature gage consists of an instrument cluster gage connected to a temperature sensor that is in contact
with the circulating engine coolant.
The temperature gage indicates the temperature of the coolant. Prolonged driving or idling in very hot weather
may cause the pointer to move beyond the center of the gage. The engine is overheating if the pointer moves
into the red zone at the upper limit of the gage.
Instrument Cluster Indicator Lamps
The instrument cluster contains indicator lamps that indicate the function of certain systems or the existence of
potential problems with the operation of the vehicle. The indicator lamps are replaceable. For replacement of
the indicator lamps contained in the instrument cluster, refer to Bulb Usage Specifications
and Instrument
Cluster Lamp Replacement .
Chime Module
The chime module is located above the instrument panel fuse block and will sound in order to bring attention to
one or more of the following conditions:
The lamps are ON, the door is ajar, and the ignition switch is not in ACC, ON, or START.
The seat belt is unbuckled when the ignition switch is in ON or START.
The door is open when the ignition switch is in ON or START.
The key is left in the ignition switch when the ignition is in LOCK and the door is open.

2005 Chevrolet Aveo
2005 ACCESSORIES & EQUIPMENT Instrument Panel, Gages, & Console - Aveo
Microsoft
Friday, July 31, 2009 1:07:03 PMPage 84 © 2005 Mitchell Repair Information Company, LLC.