Test Procedure

QC1 CONTINUOUS MEMORY DTC P1000: CHECK FOR ANY OTHER DTC

NOTE: Enter this pinpoint test only if DTC P1000 was retrieved from continuous memory. Ignore DTC P1000 in KOEO or KOER memory.

DTC P1000 indicates all of the OBD monitors have not yet been successfully tested.

Are any other DTCs received with P1000?

Yes	No
DISREGARD the current diagnostic trouble code (DTC) at this time. DIAGNOSE the next DTC. GO to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .	GO to QC2.

QC2 CHECK FOR PTO

Is the vehicle equipped with PTO?

Yes	No
GO to QC3.	GO to QC4.

QC3 CHECK THE PTO PID

Ignition ON, engine running.
Access the PCM and monitor the PTO PID.
Cycle the PTO switch/actuator ON and OFF. (Follow the PTO aftermarket instructions).

Does the PTO PID cycle ON and OFF?

Yes	No
GO to QC4.	GO to FB2 .

QC4 REQUEST TO CLEAR DTC P1000

NOTE: An entire OBD drive cycle has not yet been completed to clear DTC P1000 from the PCM.

Has the customer requested DTC P1000 be cleared from the PCM memory?

Yes	No
CARRY OUT an OBD drive cycle. REFER to ON BOARD DIAGNOSTIC (OBD) DRIVE CYCLE , to continue diagnosis.	INFORM the customer that if the law in your area requires additional driving in order to clear DTC P1000 from the PCM memory, it must be completed before an inspection/maintenance test.