Input

BCM INPUT DISPLAYS:

When troubleshooting a malfunction the BCM input display can be used to determine if the switched inputs can be properly interpreted. When one of the various input tests is selected, the state of that device is displayed as "HI" or "LO." In general, the "HI" and "LO" refer to the input terminal voltage for that circuit. The display also indicates if the input changed state so that the technician could activate or deactivate any listed device and return to the display to see if it changed state. If a change of state occurred, an "X" will appear next to the "HI/LO" indicator. The "X" will only appear once per selected input, although the "HI/LO" indication will continue to change as the input changes. Some tests are momentary and the "X" can be used as an indication of a change.

The following is a list of BCM inputs:

BI01 The "COURTESY LAMP PANEL SWITCH" display is "LO" when courtesy light switch is in the "ON" or max position.

BI02 The "PARK LAMP" switch display is "LO" when the park lamp switch is in the "OFF" position.

BI03 The "DRIVER DOOR AJAR SWITCH" display is "LO" when the drivers door is ajar.

BI04 The "PASSENGER DOOR AJAR SWITCH" display is "LO" when the passenger door is ajar.

BI05 The "DOOR JAMB" switch display is "LO" when the driver's or passenger's door is open.

BI06 The "RKE WAKE UP" display is "LO" when an unlock signal is recognized by the RKE receiver module.

BI08 The "LOW REFRIGERANT PRESSURE SWITCH" display is "LO" when the system is low on refrigerant.

BI09 The "WASH FLUID" display is "LO" when the vehicle is low on windshield washer fluid.

BI16 The "KEY IN IGNITION" display is "LO" only when the key is in the "LOCK" position. Cannot be seen as diagnostics do not work with key "OFF," therefore, should always read "HI."

BI17 The "TURN SIGNAL" display is "LO" when turn signal switch is in the "ON" position.

BI21 The "LOW BRAKE FLUID" display is "LO" when brake fluid level is low.

B122 The "PARK BRAKE SWITCH" display is "LO" when the parking brake is applied.

BI25 The "SEAT BELT" switch display is "HI" when the drivers seatbelt is fastened.

BI51 The "GENERATOR FEEDBACK" display is "LO" when there is a generator problem (or engine not running).

BI78 The "HEADLAMP SWITCH" display is "HI" whenever the headlamp switch is "ON."

BI79 The "HIGH BEAM SWITCH" display is "LO" as long as the lever is pulled in.

BI82 The "TWILIGHT ENABLE SWITCH" display is "LO" whenever the twilight sentinel is "ON." (Riviera only).

BI83 The "FOG LAMP SWITCH" display is "HI" whenever the fog lamps are "ON." (Reatta only).

BI88 The "LOW OIL LEVEL SWITCH" display will be "HI" when the engine oil level is low.