DTC P0410 Secondary Air Injection
(AIR) System
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.
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 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, P0300, P0325, P0327, P0335, P0441,
P0502, P0503, and HO2
- The engine operating.
- The engine operates for greater than
15 seconds in short term fuel trim cells 2, 5, and 20.
- Engine speed is greater than
550 RPM.
- Maximum air flow is 22 g/s.
- ECT is greater than 50°C (122°F).
- IAT is greater than 10°C (50°F).
- Ignition voltage is greater than
11.6 volts.
- Engine load is less than 30%.
Conditions
for Setting the DTC
- HO2S voltage does not go below
222 mV for 0.9 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.
- 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 isolates when the DTC failed.
- For an intermittent, refer to Symptoms
.
The numbers below refer
to the step numbers on the diagnostic table.
|
DTC P0410 - Secondary Air Injection (AIR) System Step |
Action |
Value(s) |
Yes |
No |
|
Did
you perform the Powertrain On-Board Diagnostic (OBD) System Check? |
-- |
|||
|
Are
both DTCs P0412 AND P0418 also set? |
-- |
|||
|
Is
DTC P0412 or P0418 set? |
-- |
Go to Applicable DTC
table |
||
|
Important Listen for an audible click
as the relays operate. If no audible click can be heard, inspect the related
circuits for excessive resistance.
Does
the AIR pump turn ON? |
-- |
|||
|
Important Refer to Electrical
Center Identification Views for relay terminal identification.
Is
the test lamp illuminated? |
-- |
|||
Is
the test lamp illuminated? |
-- |
|||
Is
the test lamp illuminated? |
-- |
|||
|
Important Refer to Electrical
Center Identification Views for relay terminal identification.
Is
the test lamp illuminated? |
-- |
|||
Is
air present at the AIR pump outlet? |
-- |
|||
Is
the test lamp illuminated? |
-- |
|||
Did
you find and correct the condition? |
-- |
|||
Did
you find and correct the condition? |
-- |
|||
Does
the test lamp illuminate? |
-- |
|||
Does
the test lamp illuminate? |
-- |
|||
Does
the test lamp illuminate? |
-- |
|||
|
Measure
the resistance of the AIR Bleed Valve solenoid. Refer to Testing
for Continuity in Wiring Systems. Is the resistance less than the
specified value? |
15ohms |
|||
Does
the fuse open? |
-- |
Go to Diagnostic Aids |
||
Is
the test lamp illuminated? |
-- |
|||
Does
the test lamp illuminate? |
-- |
|||
Does
the vacuum hold before the solenoid was enabled and release when the solenoid
is enabled? |
10 in. |
|||
|
Repair
the open circuit between the fuse and the relay. Refer to Wiring
Repairs in Wiring Systems. Is the action complete? |
-- |
-- |
||
Did
you find and correct the condition? |
-- |
|||
|
Repair
the faulty ground connection or open AIR pump ground circuit. Refer to Wiring
Repairs in Wiring Systems. Is the action complete? |
-- |
-- |
||
|
Test
the continuity between the AIR Solenoid relay and the AIR Bleed Valve
Solenoid using the DMM J 39200 .
Refer to Testing
for Continuity in Wiring Systems. Does the DMM display OL? |
-- |
|||
|
Repair
the short to ground in the ignition feed circuit between the fuse and the
relays. Refer to Wiring
Repairs . Is the action complete? |
-- |
-- |
||
|
Repair
the short to ground in the circuit between the AIR Pump relay and the AIR
pump. Refer to Wiring
Repairs in Wiring Systems. Is the action complete? |
-- |
-- |
||
|
Repair
the short to ground in the circuit between the AIR Solenoid relay and the AIR
Bleed Valve Solenoid/AIR pump. Refer to Wiring
Repairs in Wiring Systems. Is the action complete? |
-- |
-- |
||
Did
you find and repair the condition? |
-- |
|||
|
Replace
the AIR Bleed Valve Solenoid. Refer to Secondary
AIR Injection Bleed Valve Solenoid Replacement . Is the action complete? |
-- |
-- |
||
|
Replace
the AIR pump relay. Refer to Secondary
Air Injection Pump Relay Replacement . Is the action complete? |
-- |
-- |
||
|
Replace
the AIR solenoid relay. Refer to Secondary
Air Injection Solenoid Relay Replacement . Is the action complete? |
-- |
-- |
||
Did
you find and repair the condition? |
-- |
|||
|
Replace
the AIR pump. Refer to Secondary
AIR Injection Pump Replacement . Is the action complete? |
-- |
-- |
||
|
Repair
the open B+ supply circuit to the AIR Bleed Valve solenoid. Refer to Wiring
Repairs in Wiring Systems. Is the action complete? |
-- |
-- |
||
|
Repair
the open ground circuit to the AIR Bleed Valve solenoid. Refer to Wiring
Repairs in Wiring Systems. Is the action complete? |
-- |
-- |
||
|
Repair
the vacuum line to the AIR Bleed Valve solenoid for the following:
Is
the action complete? |
-- |
-- |
||
Does
the scan tool indicate that this test passed? |
-- |
|||
|
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 |