Input Displays

The ECM Inputs selection is to provide for testing of inputs to the ECM. The input status is shown on the display as HI or LO, the input cycle status is shown as 0 until the ECM sees that the input has cycled from LO to HI or HI to LO. After the ECM has seen the input cycle, the 0 will change to an X to indicate that the input being tested has cycled and has "passed" the input test. The following is a list of Inputs for the ECM:

EI70 - CRUISE BRAKE SWITCH

This test detects the open and close of the Cruise Control brake switch at terminal C2 of the ECM. HI means that the brake switch is closed and that the ECM has 12 volts at the cruise brake switch input (cruise switch must be ON). LO means that the brake switch is open and that the ECM has 0 volts at the input. X means that the brake pedal has been depressed and a change in switch state has been detected.

EI71 - VCC BRAKE SWITCH

This test detects the open and close of the VCC brake switch at terminal C4 of the ECM, HI means that the brake switch is closed and that the ECM has 12 volts at the VCC brake switch input . LO means that the brake switch is open and that the ECM has 0 volts at its input. X means that the brake pedal has been depressed and a change in switch state has been detected.

EI72 - THROTTLE

This test detects the open and close of the ISC nose switch at terminal A7 of the ECM. HI means that the throttle switch is open and the ECM has 5 volts at the throttle switch input. LO means that the throttle switch is closed and the ECM has 0 volts at the throttle switch input. X means that the throttle pedal has been depressed and a change in switch state has been detected.

NOTE: The transmission must operate in 3rd gear to perform this test.

EI74 - THIRD GEAR PRESSURE SWITCH
This test detects the open and close of the transmission 3rd gear pressure switch at terminal C10 of the ECM. HI means the transmission is not in 3rd gear and that the ECM has 12 volts at the 3rd gear input. LO means the transmission is in 3rd gear and that the ECM has 0 volts at the input. X means that the transmission has shifted to 3rd gear and a change in switch state has been detected.

EI82 - CRUISE ON-OFF SWITCH

This test detects the open and close of the Cruise Switch mounted on the dash at terminal D2 of the ECM. To activate this test place the switch in the ON position. HI means that the on/off switch is ON and the ECM has 12 volts at the cruise enable input. LO means that the on/off switch is off and the ECM has 0 volts at the cruise control input. X means that the ON/OFF switch has been turned on or off and a change in switch state has been detected.

NOTE: The Cruise Switch must be ON to perform this test.

EI83 - CRUISE SET/COAST SWITCH
This test detects the close of the Set-Coast switch in the turn signal lever at terminal D8 of the ECM. To activate this test depress the Set/ Coast button. HI means that the set/coast button is closed (pushed) and the ECM has 12 volts on the set/coast input. LO means that the set/coast button is open (not pushed) and the ECM has 0 volts on the set/coast input. X means that the SET/Coast switch has been depressed and a change in switch state has been detected.

NOTE: The Cruise Switch must be ON to perform this test.

EI84 - CRUISE RESUME/ACCEL SWITCH
This test detects the close of the Resume/Accel switch in the turn signal lever at terminal C3 of the ECM. To activate this test slide the Resume/Accel switch. HI means that the Resume/Accel button is closed (pushed) and the ECM has 12 volts on the Resume/Accel input, LO means that the Resume/Accel button is open (not pushed) and the ECM has 0 volts on the Resume/Accel input. X means that the Resume/Accel switch has been depressed and a change in switch state has been detected.