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Output Cycling Tests Procedure

When troubleshooting a malfunction, ECM and BCM output cycling can be used to determine if output tests can be actuated regardless of inputs and normal program instructions. Once a test in outputs has been selected, it will display "HI" and "LO" for 3 seconds in each state to indicate the command and output terminal voltage.

ECM OUTPUT PARAMETERS

Code Display Parameter
EO00 "Cycle None" (1) *
EO01 (2) "LO" CANISTER SOLENOID
EO02 (2) "LO" VCC
EO03 (2) "LO" EFE RELAY
EO04 (2) "LO" EGR SOLENOID
EO05 (2) "LO" AIR SWITCH SOLENOID
EO06 (2) "LO" AIR DIVERT SOLENOID
EO07 (3) "LO" ISC MOTOR
EO99 "CYCLE ALL" (4)
(1) No outputs activated at this point.
(2) Displayed when solenoid is on.
(3) When plunger retracting; "HI" during extension.
(4) All outputs cycled at this point.