Output

When troubleshooting a malfunction, the ECM and BCM output cycling can be used to determine if the output tests can be actuated regardless of the inputs and normal program instructions. Once a test in outputs has been selected, the test will display HI and LO for three seconds in each state to indicate the command and output terminal voltage.

A brief summary of each output is provided below:

BO00 The "CYCLE NONE" display will not display "HI" or "LO" as this is a resting spot where no outputs will be cycled.

BO03 The Retained Accessory Power (RAP) relays display is "LO" when the relays are on (energized).

BO04 The courtesy relay display is "LO" when the relay is on (energized).

BO05 The twilight relay display is "LO" when the relays are on (energized) lights on.

BO06 The HI/LO beam relays display is "LO" when the relays are on (energized) hi beams on.