Data Parameters

To display BCM data, depress and release Outside Temp button on CCP. BCM data display is initiated as display switches from Code .7.0 to Code F.8.0. To advance display, depress Hi button on CCP. To return to a lower number parameter, or go directly from Code F.8.0 to end of parameter list, depress Lo button. When troubleshooting a malfunction, the BCM data display can be used to compare vehicle to a properly functioning vehicle. The various data parameters and their values are described in Fig. 6.

P.2.0 The commanded blower voltage is read in volts. A decimal point will appear before the last digit.

P.2.1 The coolant temperature is displayed in degrees celsius (°C). This value is sent from the ECM to the BCM.

P.2.2 The commanded air mix door position is displayed in percent (%). A value close to 0% represents a cold air mix, and a value close to 100% represents a warm air mix.

P.2.3 The actual air mix door position is displayed in percent (%). This value should follow the commanded air mix door position (P.2.2) except when the door is commanded beyond its mechanical limits of travel.

P.2.4 The air delivery mode is displayed as a number from 0 to 7. Each number is a code which represents the following air delivery modes:

0 = MAX A/C
1 = A/C
2 = Intermediate
3 = Heater
4 = OFF
5 = Normal Purge
6 = Cold Purge
7 = Defrost

P.2.5 The in-car temperature is displayed in degrees celsius (°C).

P.2.6 The actual outside temperature is displayed in degrees celsius (°C). This value represents actual sensor temperature and is not restricted by the features used to minimize engine heat affects on the customer display value.

P.2.7 The high side temperature (condenser output) is displayed in degrees celsius (°C).

P.2.8 The low side temperature (evaporator input) is displayed in degrees celsius (°C).

P.2.9 The actual fuel level is read in gallons. A decimal point will appear before the last digit. This value represents actual sensor position and is not restricted by the features used to eliminate fuel slosh affects on the customer display value.

P.3.0 The ignition cycle counter value is the number of times that the ignition has been cycled to "OFF" or "START" since a BCM trouble code was last detected. After 100 ignition cycles without any malfunction being detected, all BCM codes are cleared, and the counter is reset to 0.

P.3.1 The BCM PROM ID is displayed as a four digit number up to three digits long which can be used to verify that the proper PROM was installed in the BCM.