We have a salad here. Engine parts from a 96. Vehicle is 99. System is from a 2000 year model.
The crankshaft and pistons should not be the cause as they are interchangeable.
For scan tools there are many on the market and some are rather pricey and you should get the one that is compatabile for your vehicle. I am not able to tell you which is the best and if you rreally want to, then you would have to shop around asking which is best suited for your vehicle. The supplier should be the one in the best position to advise.
Before you go to that, check this out. Skip whatever you are not able to do without a scan tool and see how it goes.
DTC P0410: AIR INJECTION SYSTEM ("S" & "T" SERIES)
Circuit Description
The VCM supplies ground to Air Injection System (AIR) pump relay which energizes AIR pump and AIR solenoid. The VCM will run a test using HO2S voltages to diagnose AIR system. During this test, the VCM will activate AIR pump during closed loop operation. When AIR system is activated, VCM will monitor HO2S voltages and short term fuel trim values for both engine banks. If AIR system is operating properly, HO2S voltages should go low and short term fuel trim should go high. The VCM checks if HO2S voltages return to greater than the rich threshold when AIR pump is disabled.
DTC P0410 will set when VCM determines HO2S voltages for both engine banks did not respond as expected during the tests. If only one sensor responded, VCM will set either a DTC P1415 or P1416 to indicate which engine bank of AIR system is inoperative.
For duplication of DTC, ensure:
No active HO2S, misfire, fuel trim, EVAP system, ECT, IAC, MAP, TP, IAT, or MAF sensor DTCs are set.
MAF is less than 25 gm/s.
Commanded air/fuel ratio is 14.7:1.
Engine load is less than 34 percent.
Power enrichment mode is not active.
Decel Fuel Cut-Off (DFCO) mode is not active.
Catalyst over-temperature protection is not active.
System has been in closed loop mode for more than 20 second.
Short term fuel trim is 124-132 counts.
Engine speed is greater than 550 RPM.
ECT is 176-230°F (80-110°C).
System voltage is 11.7 volts or greater.
Diagnostic Procedures
1. Perform On-Board Diagnostic (OBD) system check. After performing OBD system check, go to next step.
2. Start engine and allow it to reach normal operating temperature. Ensure system is in closed loop. Using scan tool, command AIR pump on and monitor short term fuel trim. If short term fuel trim changes more than 16 percent within 30 seconds, go to next step. If short term fuel trim does not change more than 16 percent within 30 seconds, go to step 4.
3. DTC is intermittent. If any additional DTCs are present, go to applicable DTC. If no additional DTCs are present, see DIAGNOSTIC AIDS.
4. Turn ignition on, with engine off. Using scan tool, command AIR pump on. If AIR pump runs, go to step 16. If AIR pump does not run, go to next step.
5. Turn ignition off. Disconnect AIR pump harness connector. Check for poor connection. If a problem is found, go to step 27. If connection is okay, go to next step.
6. Turn ignition on, with engine off. Using test light connected to ground, probe battery feed circuit at AIR pump harness connector. Using scan tool, command AIR pump on. If test light illuminates, go to next step. If test light does not illuminate, go to step 8.
7. Using test light connected to battery positive, probe ground circuit at AIR pump harness connector. If test light illuminates, go to step 38. If test light does not illuminate, go to step 28.
8. Turn ignition off. Disconnect AIR pump relay. Check for poor connections. If a problem is found, go to step 27. If connections are okay, go to next step.
9. Check for open in AIR pump battery feed circuit between AIR pump and AIR pump relay. If a problem is found, go to step 27. If circuit is okay, go to next step.
10. Using test light connected to ground, probe battery feed circuit at AIR pump relay connector. If test light illuminates, go to next step. If test light does not illuminate, go to step 29.
11. Turn ignition on, with engine off. Using test light connected to ground, probe ignition feed circuit at AIR pump relay connector. If test light illuminates, go to next step. If test light does not illuminate, go to step 30.
12. Using test light connected to battery positive, probe control circuit at AIR pump relay connector. Using scan tool, command AIR pump on. If test light illuminates, go to step 35. If test light does not illuminate, go to next step.
13. Turn ignition off. Disconnect VCM harness connector C1. Check for poor connections. If a problem is found, go to step 27. If connections are okay, go to next step.
14. Check for open in control circuit between AIR pump relay and VCM. If a problem is found, go to step 27. If circuit is okay, go to next step.
15. Turn ignition on, with engine off. Using test light connected to ground, probe control circuit at AIR pump relay connector. If test light illuminates, go to step 31. If test light does not illuminate, go to step 39.
16. Disconnect AIR shutoff valve output hose from AIR shutoff valve. Start engine. Using scan tool, command AIR pump on. If air flows from AIR shutoff valve, go to step 24. If air does not flow from AIR shutoff valve, go to next step.
17. Turn ignition off. Disconnect AIR pump output hose from AIR shutoff valve. Turn ignition on, with engine off. Using scan tool, command AIR pump on. If air flows from hose, go to next step. If air does not flow from hose, go to step 25.
18. Start engine. Disconnect vacuum hose from AIR shutoff valve. Connect vacuum gauge to AIR shutoff valve vacuum hose. Using scan tool, command AIR pump on. If vacuum is greater than 10 in. Hg with
AIR pump running, go to step 36. If vacuum is not greater than 10 in. Hg with AIR pump running, go to next step.
19. Check for leak or restriction in vacuum hose between AIR solenoid and AIR shutoff valve. If a problem is found, go to step 34. If vacuum hose is okay, go to next step.
20. Remove vacuum connector from AIR solenoid. Connect vacuum gauge to vacuum source hose from engine. Start engine. If vacuum is greater than 10 in. Hg, go to next step. If vacuum is not greater than 10 in. Hg, go to step 26.
21. Turn ignition off. Disconnect AIR solenoid harness connector. Check for poor connection. If a problem is found, go to step 27. If connection is okay, go to next step.
22. Turn ignition on, with engine off. Using test light connected to ground, probe battery feed circuit at AIR solenoid harness connector. Using scan tool, command AIR pump on. If test light illuminates, go to next step. If test light does not illuminate, go to step 33.
23. Turn ignition off. Using test light connected to battery positive, probe ground circuit at AIR solenoid harness connector. If test light illuminates, go to step 37. If test light does not illuminate, go to step 32.
24. Check for leaks or restrictions at AIR shutoff valve, hoses, check valves, fittings, AIR pipes and exhaust manifolds. If a problem is found, go to step 34. If components are okay, see
DIAGNOSTIC AIDS.
25. Check for restrictions in AIR pump inlet hose. If a problem is found, go to step 34. If hose is okay, go to step 38.
26. Repair leak or restriction in vacuum source hose to AIR solenoid. After repairs, go to step 40.
27. Repair circuit as necessary. After repairs, go to step 40.
28. Repair open in AIR pump ground circuit. After repairs, go to step 40.
29. Repair open or short to ground in AIR pump relay battery feed circuit. After repairs, go to step 40.
30. Repair open or short to ground in AIR pump relay ignition feed circuit. After repairs, go to step 40.
31. Repair short to voltage in AIR pump relay control circuit. After repairs, go to step 40.
32. Repair open in AIR solenoid ground circuit. After repairs, go to step 40.
33. Repair open in AIR solenoid battery feed circuit. After repairs, go to step 40.
34. Repair as necessary. After repairs, go to step 40.
35. Replace AIR pump relay. After replacing relay, go to step 40.
36. Replace AIR shutoff valve. After replacing shutoff valve, go to step 40.
37. Replace AIR solenoid. After replacing solenoid, go to step 40.
38. Replace AIR pump. After replacing AIR pump, go to step 40.
39. Replace VCM. Program replacement VCM using required equipment. After replacing VCM, go to step 40.
40. Using scan tool, clear DTCs. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within the conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, go to step 2.
41. Using scan tool, select CAPTURE INFO, REVIEW INFO. If any undiagnosed DTCs are displayed, go to applicable DTC test. If no undiagnosed DTCs are displayed, system is okay.
Diagnostic Aids
Low AIR system volume may set DTC P1415 or P1416, or cause an intermittent complaint. Check for the following conditions:
Pinched, kinked or restricted AIR pipes, hoses or fittings.
Leaks, holes, loose fittings or hoses.
Obstruction in AIR pump inlet.
Leaks or restrictions in vacuum hoses for AIR shutoff valve.
Melted AIR supply hose, indicating exhaust back-flow past check valve.
An intermittent may be caused by a poor connection, rubbed-through wire insulation or a broken wire inside insulation. Inspect harness connectors for backed-out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wire connection, and damaged harness.
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Friday, September 7th, 2012 AT 3:31 AM