BCM Override Parameters:

BS00 The NONE display will not show any value in display area on ECCP or CRT Monitor, as no overrides are active at this point. This is normal resting code where no overrides will be controlled. This code can be used to stop override control without having to go back to system selections.
BS01 PROGRAM NUMBER - As heating and A/C operating conditions change, program number will automatically change. Program number can be manually overridden using WARM and COOL buttons. WARM button will increase number at controlled rate until MAX HEAT mode value of "99" is reached. COOL button will decrease number at controlled rate until MAX A/C mode value of "0" is reached. Manual override will continue until override code is canceled. This manual override control allows technician to alter and observe reactions of system change on other BCM data parameters.
BS03 BULB DIM - As dimming switch position is moved, incandescent dimming number will automatically change (only if exterior lights are ON). Using override controls, WARM and COOL buttons, automatic dimming can be manually controlled. Using "99" to represent maximum brightness and "0" to represent maximum dimming of incandescent lighting, (exterior lights need not be on when overriding dimming).
BS05 C/C SERVO - With engine OFF and ignition ON. Cruise control switch must be ON to override automatic calculations for cruise control. Using "99" to represent maximum cruise position (WOT) and "0" to represent minimum cruise position (closed throttle). Manual override will continue until override code is canceled. This manual override control allows technician to alter cruise control position and observe reactions of data value for cruise servo position (BD70). The 2 parameters should agree within 3% except when servo is commanded beyond its mechanical travel limits. Remember that there is ONLY enough vacuum in storage tank to operate servo ONCE.
BS06 BLOWER SPEED - WARM button will override control of HVAC blower to full speed (99 representing maximum blower) and COOL button will slow blower to minimum speed (0 representing blower off).
BS07 OPTION CONTENT No. 1 - Option content No. 1 (OPTION 1) displayed as number from 0 to 255. Each number is a code which represents option content. BCM uses this value to determine how to operate the displays and electronic controls. Incorrect option values cause many different problems. To determine proper option value add up following options that vehicle is equipped with:
- U.S. vehicle (not Canadian or export model) - 128
- Analog cluster - 64
- Export displays (export car, option code NM8) - 32
- Compass (option code UC3) - 4
Take total of actual options from above list and compare it with OPTION 1 value. If the two are different, correct OPTION 1 value using following procedure.

To change option content number press WARM or COOL button for override control until desired number appears, (corresponding to total of actual options). Next, press and hold LOWER air mode and DEFROST buttons simultaneously for 5 seconds, (CRT equipped vehicles use DEFROST AND Rear DEFOG keys). This will reprogram BCM EEPROM to number of options displayed on the IPC.
BS08 OPTION CONTENT No. 2 (OPTION 2) is displayed as number from 0 to 255. Each number is a code which represents option content. BCM uses this value to determine how to operate the displays and electronic controls. Incorrect option values cause many different problems. To determine proper option value add up following options that vehicle is equipped with:
- Oil level sensor (all vehicles) - 64
- Anti-lock brakes (option code JL9) - 16
- Washer fluid level sensor (all vehicles) - 8
- Trofeo model - 4
Take total of actual options from above list and compare it with OPTION 2 value. If the two are different, correct OPTION 2 value using following procedure.

To change option content number press WARM or COOL button for override control until desired number appears, (number corresponding to total of actual options) Next, press and hold both LOWER air mode and DEFROST buttons for 5 seconds, (CRT equipped vehicles use DEFROST and Rear DEFOG keys). This will reprogram BCM EEPROM to number of options displayed on the IPC.