The ABS Inop indicator is controlled by either of the following:

The EBCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the ABS inop indicator when a problem with the ABS system has been detected. The ABS system may be disabled, but base brake performance will remain. Refer to Antilock Brake System.

The instrument cluster turns on the ABS Inop indicator under the following conditions:

The air bag indicator is controlled by either of the following:

The SDM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the indicator when a problem with the SIR system has been detected. Refer to Supplemental Inflatable Restraint (SIR) System.

The instrument cluster turns on the air bag indicator under the following conditions:

If the instrument cluster detects a fault in the air bag indicator, the cluster sets DTC B0670 and illuminates the Service Vehicle Soon indicator.

The ASR off indicator is controlled by either of the following:

The EBCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the ASR off indicator. The EBCM turns on the indicator under any of the following conditions:

The instrument cluster turns the ASR off indicator on for approximately 3 seconds at bulb test.

The brake warning indicator lights under any of the following conditions:

For further information refer to ABS and Hydraulic Brakes.

The instrument cluster turns on the brake warning indicator for approximately 3 seconds at bulb test.

The change oil indicator is controlled by either of the following:

The PCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the indicator when the engine oil is due to be changed. After the Class 2 message is sent from the PCM, the instrument cluster turns on the change oil indicator for approximately 60 seconds when the ignition switch is turned to the RUN position. The indicator is turned on every following ignition cycle until it is reset.

To reset the change oil indicator perform the following:

1. Turn the ignition switch to the RUN position with the engine off
2. Press and hold the trip odometer reset button for approximately 12 seconds.

When the change oil reset completed, the PCM will flash the indicator twice through the Class 2 data line (circuit 1036).

Under normal conditions, instrument cluster turns on the change oil indicator for approximately 3 seconds at bulb test.

The check gauges indicator turns on to draw the driver's attention to the instrument cluster gauges. The check gauges indicator turns on under any of the following conditions:

The PCM monitors the signals from the following and sends a Class 2 message to turn on the check gauges indicator:

Refer to Engine Controls for further information.

The instrument cluster turns on the check gauges indicator for approximately 3 seconds at bulb test.

The engine coolant temperature gauge is controlled by the PCM. The PCM monitors the engine coolant temperature sensor and sends the Class 2 information to the instrument cluster through circuit 1036. The temperature gauge displays the coolant temperature based on the Class 2 information it receives from the PCM. Refer to Engine Controls.

The fasten seat belt indicator is controlled by the Body Control Module (BCM). The BCM monitors the driver seat belt switch. If the driver seat belt is not buckled, the BCM applies voltage to the instrument cluster through circuit 237 at terminal A13 to illuminate the indicator. The indicator remains illuminated for approximately 70 seconds. The indicator turns off immediately if the seatbelt is buckled.

If the driver seat belt is buckled when the ignition switch is turned to the RUN or START position, the fasten seat belt indicator does not illuminate.

The fuel gauge is controlled by the PCM. The PCM monitors the fuel level sensor and sends the Class 2 information to the instrument cluster through circuit 1036. The fuel gauge displays the fuel level based on the Class 2 information it receives from the PCM. Refer to Engine Controls.

When the fuel level sensor reads the fuel level at less than 1/16 full, the PCM sends a Class 2 message to the instrument cluster through circuit 1036 to turn on the check gauges indicator.

The hatch ajar indicator receives battery voltage with the ignition switch is in the following positions:

The hatch ajar indicator is controlled by the rear compartment lid ajar indicator switch. The rear compartment lid ajar indicator switch closes when the rear compartment lid is open or ajar. The indicator turns on when the switch closes and ground is applied to the hatch ajar indicator through circuit 737.

The high beam indicator is controlled by the headlamp dimmer switch. The high beam indicator turns on under the following conditions:

Voltage is applied to the instrument cluster at terminal A17 through circuit 11 to turn on the indicator.

The low coolant indicator receives battery voltage with the ignition switch is in the following positions:

The low coolant indicator turns on when ground is applied to the instrument cluster terminal A15 through circuit 68. Ground is applied by either of the following:

The engine coolant level switch grounds the indicator with the coolant level in the coolant reservoir below the minimum recommended level. The ground is applied at the same time to the BCM at connector C3 terminal D13. The BCM then provides a continuous ground path to the indicator for the remainder of the ignition cycle. This prevents the indicator from turning on and of if the low coolant condition is momentary.

The BCM also turns the low coolant indicator on for approximately 1 second during bulb test.

The low oil indicator is controlled by either of the following:

The PCM receives oil level information from the engine oil level switch. When a low engine oil condition exists, the PCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the low oil indicator.

The instrument cluster turns the low oil indicator on for approximately 3 seconds at bulb test.

The low oil indicator is controlled by either of the following:

The EBCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the low trac indicator. The EBCM turns on the indicator under either of the following conditions:

The instrument cluster turns the low trac indicator on for approximately 3 seconds at bulb test.

The oil pressure gauge receives battery voltage through circuit 1035 with the ignition switch in the following positions:

The oil pressure gauge is controlled by the engine oil pressure sensor. The resistance of the engine oil pressure sensor varies with the engine oil pressure. The voltage drop across the oil pressure gauge varies due to the changing resistance in the gauge ground circuit. The oil pressure gauge reading changes with the voltage drop.

The reduced engine power indicator is controlled by the following:

The PCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the indicator when problems with the engine have been detected. Refer to 3.8L Engine Controls.

The instrument cluster turns on the reduced engine power indicator under the following conditions:

The security indicator is controlled by the Body Control Module (BCM). The BCM monitors the driver the ignition key resistor pellet. If the resistor pellet is incorrect, the BCM applies ground to the instrument cluster through circuit 728 at terminal B3 to illuminate the indicator. For a complete understanding of the security indicator operation, refer to Theft Deterrent.

The BCM turns on the security indicator for approximately 5 seconds at bulb test.

The skip shift indicator is controlled by the following:

The PCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the indicator when the transmission skip shift function is enabled. Refer to 5.7L Engine Controls.

The instrument cluster turns on the skip shift indicator for approximately 3 seconds at bulb test.

The powertrain control module (PCM) controls the service engine soon indicator. Refer to Engine Controls.

The service vehicle indicator is controlled by the following:

The PCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the indicator when problems with the engine have been detected. Refer to Engine Controls.

The instrument cluster turns on the service soon indicator under the following conditions:

The vehicle speed sensor (VSS) is a gear driven permanent magnet generator housed in the transaxle. The sensor generates a sine wave output with a frequency proportional to the vehicle speed. The powertrain control module (PCM) converts the signal to an output that switches to ground at a frequency of 4000 pulses per mile. The signal (circuit 389) drives the speedometer and the odometer.

The tachometer is controlled by the PCM. The PCM monitors the engine RPMs and sends the Class 2 information to the instrument cluster through circuit 1036. The tachometer displays the engine RPMs on the Class 2 information it receives from the PCM. Refer to Engine Controls.

The TCS off indicator is controlled by either of the following:

The EBCM sends a Class 2 message through circuit 1036 to the instrument cluster to turn on the TCS off indicator. The EBCM turns on the indicator under any of the following conditions:

The instrument cluster turns the TCS indicator on for approximately 3 seconds at bulb test.

The turn signal switch is used to control the turn signal lamps. At the same time, the voltage is sent to the instrument cluster in order to turn on the turn signal indicators. If the emergency flashers are turned on, both of the turn signal indicators will flash. Refer to Lighting Systems.