Diagnostic Reference Values

NOTE: For tests involving switches the values will be: switch OFF (released) / switch ON (depressed).

NOTE: The PCM is not fully compatible with the EEC-IV Monitor. Because of this, some inputs and outputs register faulty readings. These pins read NA (Not Applicable) for reference values. These pins may be monitored using a Breakout Box.

Inputs

Diagnostic Reference Values:

1 0 Volts in blower motor switch positions OFF and 1, 12-14 Volts in blower motor switch positions 2 and 3.

2 0 Volts with A/C OFF, 12-14 Volts with A/C ON and blower motor switch in position 2 or 3.

3 ATX/MTX.

4 0 Volts while in NEUTRAL or clutch pedal depressed, 12-14 Volts while in gear or clutch pedal released.

5 0.5 Volts in PARK or NEUTRAL, 12 Volts for all other selector lever positions.

6 Use manual DCV setting.

7 At 20°C(68°F)

8 0.5 Volts with accelerator pedal released, 12 Volts with accelerator pedal depressed.

9 0.5 Volts with accelerator pedal released, 12 Volts with accelerator pedal fully depressed.

10 Though this pin does not register MPH (vehicle speed), it will register an alternating voltage (0-5 Volts) as the vehicle is slowly rolled forward or backwards.

11 0 Volts key in RUN, 10 Volts with engine cranking.



Outputs

Diagnostic Reference Values:

1 0 Volts with A/C OFF, 12-14 Volts with A/C ON and blower motor switch in position 2 or 3.

2 Use manual DCV setting.

3 ATX/MTX.

4 0 Volts while MIL illuminated, 12 Volts with MIL not illuminated.

5 0 Volts while shift indicator lamp illuminated, 12 Volts with SIL not illuminated.

6 0 Volts when illuminated, 14 Volts when not illuminated.