DTC P0410 Secondary Air Injection (AIR) System. GMC Truck GMC K Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Controls - 4.8L, 5.3L, and 6.0L 🢒 DTC P0410 Secondary Air Injection (AIR) System

Engine Controls Component Views
Cell 21: G104, Secondary Air Injection Reaction Valve Solenoid
OBD II Symbol Description Notice
Handling ESD Sensitive Parts Notice

Circuit Description

An AIR pump is used on this vehicle to lower tail pipe emissions on start-up. The PCM supplies a ground to the AIR pump relay, which energizes the AIR pump and the AIR solenoid valve. Engine vacuum is applied to the AIR Shut-off valve when the AIR solenoid is energized. The engine vacuum opens the AIR shut-off valve which allows air to flow to the exhaust manifolds.

The PCM monitors the HO2S voltages to diagnose the AIR system.

During the AIR test, the PCM activates the AIR pump during closed loop operation. When the AIR system is activated, the PCM monitors the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR system is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.

If the PCM determines that the HO2S voltages for both banks did not respond as expected during the tests, DTC P0410 sets. If only one sensor responded, the PCM sets either a DTC P1415 or P1416 to indicate on which bank the AIR system is inoperative.

Conditions for Running the DTC

•	DTCs P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0131-P0161, P0171-P0175, P0200, P0300, P0335, P0336, P0351-P0358, P0506, P0507, P1220, P1221, P1258, not set.

•	The engine run time is greater than 2 seconds.

•	The TP sensor angle is not moving more than 1%.

•	The engine load is less than 43%.

•	The engine air flow is less than 22 g/s.

•	Engine speed is greater than 900 RPM.

•	The ignition voltage is greater than 11.7 volts.

•	The air fuel ratio is 14.7:1.

•	The ECT is greater than -10°C (14°F), but less than 110°C (230°F).

•	The IAT is greater than -10°C (14°F).

•	The fuel system is not operating in power enrichment or deceleration fuel cut-off.

•	The short term fuel trim is in cells 5 or 6.

Conditions for Setting the DTC

•	The HO2S voltage does not go below 222 mV within 1.2 seconds when the AIR pump turns on during closed loop operation.

•	Short term fuel trim does not go above a predetermined amount when the AIR pump turns on during closed loop operation.

Action Taken When the DTC Sets

•	The PCM illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.

•

The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the PCM stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC

•	The PCM turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.

•	A last test failed, or current DTC, clears when the diagnostic runs and does not fail.

•	A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.

•	Use a scan tool in order to clear the MIL and the DTC.

Diagnostic Aids

Important: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM connector gaskets when diagnosing/replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent water intrusion into the PCM.

•

Using Freeze Frame and/or Failure Records data may aid in locating an intermittent condition. If you cannot duplicate the DTC, the information included in the Freeze Frame and/or Failure Records data can aid in determining how many miles since the DTC set. The Fail Counter and Pass Counter can also aid determining how many ignition cycles the diagnostic reported a pass and/or a fail. Operate the vehicle within the same freeze frame conditions (RPM, load, vehicle speed, temperature etc.) that you observed. This will isolate when the DTC failed.

•	For an intermittent, refer to Symptoms .

Test Description

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

DTC P0418 set, indicates the control side of the relay is not operating. Refer to DTC P0418 Secondary Air Injection (AIR) Pump Relay Control Circuit for further diagnosis. Vacuum lines that are reversed on the AIR solenoid causes this DTC to set.

The AIR MaxiFuse® is located in the underhood electrical center.

The AIR pump relay is located near the AIR pump.

Inspect for intermittent shorts to ground if the AIR pump functions properly.

DTC P0410 - Secondary Air Injection (AIR) System

Step

Action

Value(s)

Yes

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

Important: Ensure the vacuum source is on the proper side of the AIR solenoid before proceeding. The vacuum source port is on the same side as the mounting bracket.

Is DTC P0418 set?

Go to DTC P0418 Secondary Air Injection (AIR) Pump Relay Control Circuit

Go to Step 3

Is the AIR MaxiFuse® OK?

Go to Step 4

Go to Step 12

Install the scan tool.
Turn ON the ignition leaving the engine OFF.
Enable the AIR pump using a scan tool in output controls.

Does the AIR pump turn ON?

Go to Step 9

Go to Step 5

Turn OFF the ignition.
Disconnect the AIR pump relay.
Turn ON the ignition leaving the engine OFF.
Probe the AIR pump relay B+ supply circuit terminal (switch side of relay) using the test lamp J 35616-200 connected to a ground. Refer to Using Connector Test Adapters in Wiring Systems.

Is the test lamp illuminated?

Go to Step 6

Go to Step 18

Jumper the B+ terminal to the AIR pump feed circuit at the relay harness connector using a fused jumper wire. Refer to Using Fused Jumper Wires in Wiring Systems.

Does the AIR pump turn ON?

Go to Step 24

Go to Step 7

The jumper still installed.
Disconnect the AIR pump electrical connector.
Probe terminal A of the AIR pump electrical connector using the test lamp J 35616-200 connected to battery ground. Refer to Using Connector Test Adapters in Wiring Systems.

Is the test lamp illuminated?

Go to Step 8

Go to Step 19

The jumper still installed.
Connect the test lamp J 35616-200 from terminal A to terminal B of the AIR pump harness connector.

Is the test lamp illuminated?

Go to Step 27

Go to Step 20

Did the AIR solenoid valve turn ON when the AIR system was enabled?

Go to Step 15

Go to Step 10

Disconnect the AIR solenoid valve harness connector.
Probe terminal A of the harness connector with the test lamp J 35616-200 connected to battery ground. Refer to Using Connector Test Adapters in Wiring Systems.
Enable the AIR pump using a scan tool in output controls.

Does the test lamp illuminate?

Go to Step 11

Go to Step 22

Connect the test lamp J 35616-200 from terminal A to terminal B of the AIR solenoid valve harness connector.
Enable the AIR pump using a scan tool in output controls.

Does the test lamp illuminate?

Go to Step 25

Go to Step 20

Turn OFF the ignition.
Disconnect the electrical connectors from the following components:

•

AIR pump

•	AIR pump relay

•	AIR Solenoid Valve

Remove the AIR Maxifuse® from the underhood electrical center.
Probe the battery feed terminal for the AIR pump relay harness connector with the test lamp J 35616-200 connected to B+.

Does the test lamp illuminate?

Go to Step 21

Go to Step 13

Probe the AIR Pump/AIR Solenoid feed circuit at the AIR pump relay harness connector using the test lamp J 35616-200 connected to B+.

Does the test lamp illuminate?

Go to Step 23

Go to Step 14

Turn OFF the ignition.
Re-install the following components/electrical connector:

•	A new AIR MaxiFuse®

•	The AIR pump relay

•	The AIR solenoid

Turn ON the ignition leaving the engine OFF.
Turn ON the AIR pump using the scan tool in the output controls.

Does the AIR MaxiFuse® open?

Go to Step 26

Go to Step 28

Start the engine.
Disconnect the vacuum harness from the AIR solenoid valve.
Connect a vacuum gauge to the vacuum source.

Is an engine vacuum displayed on the vacuum gauge?

Go to Step 16

Go to Step 29

Reconnect only the vacuum source to the AIR solenoid valve.
Connect a vacuum gauge to the other port of the AIR solenoid valve.
Enable the AIR pump using the scan tool in the output controls.

Is an engine vacuum indicated on the vacuum gauge when the AIR pump is enabled?

Go to Step 17

Go to Step 26

Reconnect the vacuum harness to the AIR solenoid valve.
Disconnect the air outlet hose from the AIR Shut-off valve.
Enable the AIR pump using the scan tool in the output controls.

Is air present at the outlet of the AIR Shut-off valve?

Go to Step 30

Go to Step 31

Repair the open circuit between the fuse and the relay. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 33

Repair the open circuit between the AIR pump and the AIR relay. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 33

Repair the faulty ground connection or the open ground circuit. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 33

Repair the short to ground in the ignition feed circuit between the fuse and the relay. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 33

Repair the open circuit in the circuit between the AIR Solenoid and the AIR pump relay. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 33

Repair the short to ground in the circuit between the AIR pump relay and the AIR pump/solenoid. Refer to Wiring Repairs in Wiring Systems.

Is the action complete?

Go to Step 33

Replace the AIR pump relay. Refer to Secondary Air Injection Pump Relay Replacement .

Is the action complete?

Go to Step 33

Inspect for poor connections at the AIR solenoid valve electrical connector. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
Repair the poor connection as necessary. Refer to Repairing Connector Terminals in Wiring Systems.

Did you find and correct the condition?

Go to Step 33

Go to Step 26

Replace the AIR solenoid valve. Refer to AIR Solenoid Valve Replacement .

Is the action complete?

Go to Step 33

Inspect for poor connections at the AIR pump electrical connector. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
Repair the poor connection as necessary. Refer to Repairing Connector Terminals in Wiring Systems.

Did you find and correct the condition?

Go to Step 33

Go to Step 28

Connect the AIR pump electrical connector.
Turn ON the AIR pump using a scan tool in the output controls.

Does the AIR pump MaxiFuse® open?

Go to Step 32

Go to Diagnostic Aids

Important: Inspect the vacuum check valve for proper installation. The tapered side of the check valve goes toward the vacuum source. Also inspect for vacuum with the check valve removed from the vacuum line. If there is vacuum replace the check valve.

Repair the vacuum source.

Is the action complete?

Go to Step 33

Repair the restriction or for an AIR hose that is not connected at the point where the AIR system branches to both sides.

Is the action complete?

Go to Step 33

Replace the AIR Shut-off valve. Refer to AIR Shut-Off Valve Replacement .

Is the action complete?

Go to Step 33

Replace the AIR pump. Refer to Secondary AIR Injection Pump Replacement .

Is the action complete?

Go to Step 33

Select the Diagnostic Trouble Codes (DTC) option and the Clear DTC Information option using the scan tool.
Idle the engine at the normal operating temperature.
Select the Specific DTC option under the Diagnostic Trouble Code (DTC) option using a scan tool.
Operate vehicle within the Conditions for Running the DTC as specified in the supporting text, if applicable.

Does the scan tool indicate that this test passed?

Go to Step 34

Go to Step 2

Select the Capture Info option and the Review Info option using the scan tool.

Are any DTCs displayed that you have not diagnosed?

Go to the applicable DTC table

System OK