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Home >> Oldsmobile >> 2001 >> Intrigue V6-214 3.5L VIN H SFI >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0410

P0410





DTC P0410

Circuit Description

The control module activates the secondary air injection system by grounding both the pump relay and the vacuum control solenoid control circuits. This energizes the pump and the vacuum control solenoid. Vacuum is then applied, opening the shut-off valves. The pump then forces filtered fresh air into the exhaust stream in order to accelerate catalyst operation. The control module will run up to three diagnostic tests using the pre-catalyst HO2S voltage and Short Term FT to diagnose the system. The system can be diagnosed during normal secondary air injection operation or the control module can activate the system specifically for diagnostic purposes. If the system is operating properly the HO2S voltage will decrease and the Short Term FT will increase when the system is activated. If a system air flow problem is detected this DTC will set. When inactive, the system prevents air flow in either direction.

Conditions for Running the DTC

- DTCs P0030, P0036, P0101, P0102, P0103, P0112, P0117, P0118, P0121, P0122, P0123, P0125, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P0140, P0141, P0171, P0172, P0300, P0440, P0442, P0442, P0446, P0449, P0502, P0503, P1111, P1112, P1114, P1115, P1121, P1122, P1133, P1134, P1380, P1381, or P1441 are not set.
- The startup ECT is between 15°c (41°F) and 56±C (132°F).
- The engine operates for more than 1 second.
- The engine coolant temperature is between 5°C (41°F) - 110°C (230°F).
- The IAT is between 5°C (41°F) - 70°C (158°F).
- The short term fuel trim is between -4 to + 4 percent.
- The engine load is between 0 and 50 percent.
- The MAF is between 0 and 25 gm/s.
- The BARO is at 75 kpa.
- The engine speed is more than 1200 RPM.
- The air/fuel ratio is more than 13.0:1.
- The ignition voltage is more than 9 volts.
- The vehicle speed is more than 46 km/h (25 mph).

Conditions for Setting the DTC

- The pre-catalyst HO2S voltage remains above a predetermined lean value during the test.

AND

- The Short Term FT does not increase a calibrated amount during the test.
- Both conditions above exist for 3 consecutive tests.

Action Taken When the DTC Sets

- The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC

- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.

Diagnostic Aids

Low system airflow can cause an intermittent complaint. Inspect for the following conditions:

- Pinched, kinked, restricted, or leaking pipes, hoses or fittings
- Restricted pump inlet hose/duct/filter
- Pinched, kinked, restricted, or leaking vacuum lines
- Heat damage
- The control module connectors
- The electrical center fuse/relay cavities
- The component terminals
- The component harness connector
- Using the kit will prevent damage caused by the improper probing of connector terminals.

If the DTC cannot be duplicated and is determined to be intermittent, reviewing the Fail Records can be useful in determining when the DTC was last set. Also refer to Intermittent Conditions Symptom Related Diagnostic Procedures.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

2. Other secondary air injection DTCs should be diagnosed first if set. If the HO2S voltage remains below 50 mV for approximately 5 seconds the system is operating normally.
4. Listen for a running motor. Command both the ON and OFF states. Repeat the commands as necessary.
5. Listen for a click when the device operates. Command both ON and OFF states. Repeat the commands as necessary.
6. This step begins to eliminate an airflow problem.
9. This step tests for a vacuum leak at the valve.
10. This step tests the operation of the valve.
12. This step tests the control circuit for operation.
13. This step bypasses the relay to test pump operation.
15. This step tests the control circuit for operation.
18. This step eliminates the relay and the control circuit as a cause for continuous pump operation.
19. This step tests the control circuit for operation.
40. The pump may have failed from another fault. Refer to step 18, if pump operates without a command.
42. If the HO2S voltage remains below 50 mV for approximately 5 seconds, the system is operating normally.
























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