Circuit Test AP - OBD-II Readiness Code
- 1) DTC P1000
This DTC indicates operating conditions have not been satisfied for all of the OBD-II monitors to run. Possible causes for this fault are:- Drive conditions not satisfied.
- Keep Alive Memory (KAM) cleared.
- Faulty Powertrain Control Module (PCM).
NOTE: If power to PCM is disconnected, P1000 will be set until OBD-II monitors have run and cleared.Perform all SELF-TESTS and check for DTCs. If any DTCs other than P1000 are present, perform appropriate circuit test and repair as necessary. Clear DTCs and repeat QUICK TEST . If DTC P1000 is only DTC present, go to next step.
- 2) Perform Drive Cycle
Perform drive cycle. See DRIVE CYCLE PROCEDURE under ADDITIONAL SYSTEM FUNCTIONS. If DTC P1000 is present, go to next step. If DTC P1000 is not present, no problem is indicated at this time. - 3) Verify Certain Operating Conditions Have Been Satisfied
Using scan tool, select EOT, VPWR and GPC PIDs from PID/DATA monitor menu. If engine is started and EOT PID value is less than 120°F (49°C), VPWR value must be 11.8-14.0 volts until GPC PID value is zero percent. Using scan tool, monitor MFDES PID value and engine RPM with engine under full load. MDFDES PID value must be more than 37 milligrams/stroke for 12 or more seconds with engine speed at more than 2300 RPM. With engine at normal operating temperature, monitor MFDES PID. MFDES PID value must be less than 12 milligrams/stroke for 12 seconds or more.With all the conditions met in this step, if DTC P1000 is cleared, no problem is indicated at this time. If DTC P1000 is still present, determine DTC clearing fault. Perform all engine performance diagnosis tests. See ENGINE PERFORMANCE DIAGNOSIS in SYSTEM/COMPONENT TESTS - 7.3L DIESEL article.