Test Procedure
- QC1 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
Is DTC P1000 present?
Yes No GO to QC2. GO to QC3. - QC2 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 QC3. - QC3 CHECK FOR PTO
Is the vehicle equipped with PTO?
Yes No GO to QC4. For DTC P1000, GO to QC5.
For all others, INFORM the customer the law in your area may require additional driving to complete an inspection/maintenance test. - QC4 CHECK THE PTO PID
- Ignition ON, engine running.
- Access the PCM and monitor the PTO (MODE) PID.
- Cycle the PTO switch/actuator ON and OFF. (Follow the PTO aftermarket instructions).
Does the PTO PID cycle ON and OFF?
Yes No For DTC P1000, GO to QC5.
For all others, INFORM the customer the law in your area may require additional driving to complete an inspection/maintenance test.GO to PINPOINT TEST FB - QC5 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.