Input

PCM INPUT DISPLAYS:

When troubleshooting a malfunction the PCM 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 PCM inputs:

EI01 The brake switch "BRK SW" display is "LO" with the service brake depressed.

EI02 The cruise brake switch "C/C BRAKE" display is "LO" with the service brake depressed.

EI03 The cruise set/coast switch "C/C SET/CO" display is "HI" when the cruise "ON/OFF" switch is "ON" and the set/coast switch is depressed.

EI04 The cruise resume/accel switch "C/C RES/AC" display is "HI" when the cruise "ON/OFF" switch is "ON" and the resume/accel switch is pushed.

EI05 The cruise "ON/OFF" switch display is "HI" when the switch is "ON."

EI06 The heated windshield request switch (HEATED WND) is "HI" when the switch is "ON."