Scan Tool Data Definitions

Scan tool displays 0-5 volts. This is the voltage at the ambient air temperature sensor as monitored by the body control module (BCM).

Scan tool displays 0-19 volts. This is the voltage measured at the battery positive voltage circuit of the body control module (BCM).

Scan tool displays 0-19 volts. This is the voltage measured at the battery positive voltage circuit of the instrument panel cluster (IPC).

The scan tool displays Off/On. This is the status of the brake fluid level switch as monitored by the IPC

The scan tool displays On/Off. This is the state of the (change oil now command) indicator as determined by the power train control module (PCM). The IPC receives the oil life information via class 2 message from the PCM.

The scan tool displays No/Yes. This is the status of the cruise control switch as detected by the PCM or ECM.

The scan tool displays Door Closed or Door Ajar. This is the status of the passenger door ajar switch(es) as monitored by the body control module (BCM).

The scan tool displays Door Closed or Door Ajar. This is the status of the driver door ajar switch as monitored by the body control module (BCM).

The scan tool displays -40 to + 151°C (-40 to + 304°F). The PCM or ECM monitors the voltage at the signal circuit of the engine coolant temperature sensor. The voltage is inversely proportional to the engine coolant temperature.

The scan tool displays Ok/Low. The ECM monitors the signal circuit of the engine oil level switch, where an open switch signal is displayed as Low (low engine oil level).

The scan tool displays 0-100%. The ECM calculates the remaining engine oil life.

The scan tool displays volts. The scan tool displays the current engine oil pressure sensor voltage as monitored by the ECM.

The scan tool displays kPa (psi). The scan tool displays the current engine oil pressure as calculated by the ECM.

The scan tool displays Ok/Low. The scan tool displays the current engine oil pressure as monitored by the PCM.

The scan tool displays 0-9999 RPM. The Engine speed is computed by the ECM from the 3X reference input. It should remain close to desired idle under various engine loads with the engine idling.

The scan tool displays Percent (%). The ECM calculates the amount of fuel remaining in the tank based on the signal circuit of the fuel level sensor. The IPC receives a serial data message from the ECM indicating the fuel level percent.

The scan tool displays 0-5V. The scan tool displays the voltage at the signal circuit of the fuel level sensor as calculated by the ECM.

The scan tool displays Active/Inactive. This is the status of the headlamp off switch as monitored by the body control module (BCM).

The scan tool displays Active/inactive. This is the status of the headlamp on switch as monitored by the body control module (BCM).

The scan tool displays 0-19 volts. This is the voltage measured at the ignition 1 signal circuit of the ECM.

The scan tool displays Yes/No. This is the status of the key-in-ignition switch as monitored by the BCM. When the key is in the ignition cylinder, the scan tool displays On.

The scan tool displays On/Off. The IPC receives a serial data message from the ECM requesting the display of the indicator.

The scan tool displays On/Off. The IPC receives a serial data message from the ECM requesting the display of the indicator.

The scan tool displays On/Off. This is the state of the MIL indicator as commanded by the ECM.

The scan tool displays Ok/Open/Short to Gnd/Short to B+/Incomplete. This is the status of the MIL circuit history as monitored and recorded by the ECM.

The scan tool displays On/Off. This is the status of the park lamp switch as monitored by the BCM.

The scan tool displays Ok/Open/Short to Gnd/Short to B+/Incomplete. This is the status of the vehicle speed signal circuit as monitored by the ECM.

The scan tool displays 0-255 km/h (0-155 mph). The ECM monitors the voltage at the vehicle speed sensor signal circuit and calculates the vehicle speed. The voltage is proportional to the vehicle speed.