Refer to P041211.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P04919C | AIR System Insufficient Flow Bank 1 Low/Insufficient Flow | Either of the following conditions is met (2 trip detection logic):
·
When secondary air injection is turned from off to on, the change in the secondary air injection pressure is less than 5 kPa (0.725 psi). ·
When secondary air injection is on, the amount of air from the air pump assembly is below the threshold. |
·
Air pump assembly ·
Open in air pump assembly circuit ·
Prefilter (for air pump assembly) ·
Secondary air injection system piping ·
Pressure sensor (bank 1) ·
Open or short in pressure sensor (bank 1) circuit ·
Air injection control driver ·
ECM |
Comes on | DTC stored | SAE Code: P0491 |
| P04929C | AIR System Insufficient Flow Bank 2 Low/Insufficient Flow | When secondary air injection is on, the amount of air from the air pump assembly is below the threshold. | ·
Air pump assembly ·
Open in air pump assembly circuit ·
Prefilter (for air pump assembly) ·
Secondary air injection system piping ·
Pressure sensor (bank 2) ·
Open or short in pressure sensor (bank 2) circuit ·
Air injection control driver ·
ECM |
Comes on | DTC stored | SAE Code: P0492 |
| P24447E | AIR System Pump Stuck On Bank 1 Actuator Stuck On | Secondary air pressure is higher than 3 kPa (0.435 psi) despite the ECM commanding the air pump assembly to turn off (2 trip detection logic). | ·
Short in air pump assembly circuit ·
Pressure sensor (bank 1 and bank 2) ·
Open or short in pressure sensor (bank 1 and bank 2) circuit ·
Air injection control driver ·
ECM |
Comes on | DTC stored | SAE Code: P2444 |
| P24457F | AIR System Pump Stuck Off Bank 1 Actuator Stuck Off | Secondary air pressure is below 1 kPa (0.145 psi) despite the ECM commanding the air pump assembly to turn on (2 trip detection logic). | ·
Air pump assembly ·
Open in air pump assembly circuit ·
Secondary air injection system piping ·
Pressure sensor (bank 1 and bank 2) ·
Open or short in pressure sensor (bank 1 and bank 2) circuit ·
Air injection control driver ·
ECM |
Comes on | DTC stored | SAE Code: P2445 |
The ECM monitors the pressure in the secondary air passage using the pressure sensor located on the emission control valve set of the secondary air injection system. The sensor measures the pressure in the secondary air passage and transmits a signal to the ECM.
If either of the following conditions occurs, the ECM interprets it as a malfunction of the secondary air injection system, and illuminates the MIL and stores a DTC:
The pressure indicated by the pressure sensor does not reach threshold levels despite the ECM turning on the air pump assembly.
The pressure indicated by the pressure sensor exceeds threshold levels despite the ECM turning off the air pump assembly.
Example:
DTC P24447E mainly indicates a malfunction in which the air pump assembly is stuck on.
DTC P24457F mainly indicates a malfunction in which the air pump assembly is stuck off.
If ERROR is displayed on the GTS during the test, stop the engine for 10 minutes, and then try again.
This Secondary Air Injection Check only allows technicians to operate the secondary air injection system for a maximum of 5 seconds. Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks. While secondary air injection system operation using the GTS is prohibited, the GTS display indicates the prohibition (WAIT or ERROR). If ERROR is displayed on the GTS during the test, stop the engine for 10 minutes, and then try again.
Performing the Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
Start the engine and warm it up.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.
Start the engine after the GTS initialization is finished.
Perform the System Check operation by pressing Next.
Perform the following to confirm the secondary air injection system pending DTCs: Press Exit.
Enter the following menus: Powertrain / Engine / DTC.
Check for pending DTCs.
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
After Secondary Air Injection Check is completed, check All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P04919C, P04929C, P24447F or P24457F.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE, perform the Confirmation Driving Pattern and check the DTC judgment result again.
Refer to DTC P041211.
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
By using the GTS to perform the Secondary Air Injection Check operation in the System Check, the air fuel ratio and the pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. This helps technicians to troubleshoot the system when it malfunctions. Furthermore, pending codes also can be checked by performing Utility / Secondary Air Injection Check / Automatic Mode after the repair.
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read DTCs.
| Result | Proceed to |
|---|---|
| P04919C and/or P04929C is output | A |
| P24447E and/or P24457F is output | B |
| P04919C, P04929C, P24447E and/or P24457F and P041811 and/or P041815 are output | C |
| P04919C, P04929C, P24447E and/or P24457F and other DTCs (except P041811 and P041815) are output | D |
If any DTCs other than P041811, P041815, P04919C, P04929C, P24447E and/or P24457F are output, troubleshoot those DTCs first.
A
B
C
D
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC.
Turn the ignition switch off and wait for at least 30 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Remove the prefilter (for air pump assembly).
Start the engine and warm it up.
Turn the ignition switch off.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.
| Tester Display |
|---|
| Secondary Air Injection Check |
Start the engine after the GTS initialization is finished.
Perform the System Check operation by pressing Next.
After operating the secondary air injection system, perform the following to confirm the secondary air injection system pending codes: Press the Exit button.
Check pending DTCs.
Turn the ignition switch off.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Result | Proceed to |
|---|---|
| P04919C and/or P04929C is output | A |
| No pending DTC | B |
A
B
Start the engine and warm it up.
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP: ON, ASV 1: OPEN, ASV 2: OPEN and AIR PUMP: OFF, ASV 1: CLOSE, ASV 2: CLOSE.
When Manual Mode is selected, the GTS initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 5 seconds. After the initialization, air pump assembly and emission control valve operation can be selected.
| Tester Display |
|---|
| Secondary Air Injection Check |
Start the engine.
Perform the secondary air injection system forced operation while the engine is idling.
Check that the air pump assembly (AIR PUMP), emission control valve (ASV 1 and ASV 2) and pressure in the secondary air injection system passage (Air Pressure (Gauge) and Air Pressure 2 (Gauge)) status displayed on the GTS match the conditions shown in the table below.
| GTS Operation | AIR PUMP | ASV 1
ASV 2 |
Air Pressure (Gauge)*
Air Pressure 2 (Gauge)* |
|---|---|---|---|
| AIR PUMP: ON, ASV 1: OPEN, ASV 2: OPEN | ON | ON | 1 kPa or more [A] |
| AIR PUMP: OFF, ASV 1: CLOSE, ASV 2: CLOSE | OFF | OFF | Less than 2.5 kPa [B] |
*: Average pumping pressure. The pressure should be 1 kPa or more when the secondary air injection system operates.
The pressures for [A] and [B] should differ by 1 kPa or more.
Turn the ignition switch off.
This Secondary Air Injection Check only allows technicians to operate the secondary air injection system for a maximum of 5 seconds.
Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated, intervals of at least 30 seconds are required between checks.
While secondary air injection system operation using the GTS is prohibited, the GTS display indicates the prohibition (WAIT or ERROR).
If ERROR is displayed on the GTS during the test, stop the engine for 10 minutes, and then try again.
Performing the Secondary Air Injection Check repeatedly may cause damage to the secondary air injection system. If necessary, leave an interval of several minutes between System Check operations to prevent the system from overheating.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC.
Turn the ignition switch off and wait for at least 30 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Start the engine and warm it up.
Turn the ignition switch off.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.
| Tester Display |
|---|
| Secondary Air Injection Check |
Start the engine after the GTS initialization is finished.
Perform the System Check operation by pressing Next.
After operating the secondary air injection system, perform the following to confirm the secondary air injection system pending codes: Press the Exit button.
Check pending DTCs.
Turn the ignition switch off.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Result | Proceed to |
|---|---|
| P04919C, P04929C, P24447E and/or P24457F is output | A |
| No pending DTC | B |
A
B
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / Air pressure (Absolute) and Air Pressure 2 (Absolute).
Check the pressure displayed on the GTS.
45.6 to 135 kPa (6.612 to 19.575 psi)
The GTS displays the air pump pressure as absolute pressure.
| Result | Proceed to |
|---|---|
| OK | A |
| NG | B |
A
B
Check that all the pipes and hoses between the air pump assembly and emission control valve set are securely connected.
Inspect the pipes and hoses for blockages and damage.
Secondary air injection system piping has no blockages or damage.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Front view of wire harness connector
(to Air Injection Driver) |
Disconnect the air injection control driver connectors.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A35-1 (E) - Body ground | Always | Below 1 Ω |
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A34-1 (BATT) - Body ground | Always | 11 to 14 V (near battery voltage) |
| A35-5 (+B) - Body ground | Ignition switch ON | 11 to 14 V (near battery voltage) |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the ECM connector.
Disconnect the air injection control driver connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| E1-23 (AIRP) - A35-4 (SIP) | Always | Below 1 Ω |
| E1-23 (AIRP) or A35-4 (SIP) - Body ground and other terminals | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| NEXT |
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC.
Turn the ignition switch off and wait for at least 30 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Start the engine and warm it up.
Turn the ignition switch off.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.
| Tester Display |
|---|
| Secondary Air Injection Check |
Start the engine after the GTS initialization is finished.
Perform the System Check operation by pressing Next.
After operating the secondary air injection system, perform the following to confirm the secondary air injection system pending codes: Press the Exit button.
Check pending DTCs.
Turn the ignition switch off.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Result | Proceed to |
|---|---|
| P04919C, P04929C, P24447E and/or P24457F is output | A |
| No pending DTC | B |
A
B
Disconnect the air injection control driver connector.
| *1 | Air Injection Control Driver |
| *2 | ECM |
| *a | Front view of wire harness connector
(to Air Injection Control Driver) |
Connect terminals DI and SIV of the wire harness connector for the air injection control driver.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP: ON, ASV 1: OPEN, ASV 2: OPEN.
| Tester Display |
|---|
| Secondary Air Injection Check |
When Manual Mode is selected, the GTS initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 5 seconds. After the initialization, AIR PUMP and ASV operation can be selected.
Start the engine.
Perform the secondary air injection system intrusive operation while the engine is idling.
Measure the voltage between the SIV and E terminals of the ECM connector when the secondary air injection system is on and off.
Turn the ignition switch off.
Do not perform the System Check operation repeatedly as it may cause the damage in the system. If necessary, leave an interval of several minutes between System Check operations.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A35-3 (SIV) - A35-1 (E) | AIR PUMP: ON, ASV 1: OPEN, ASV 2: OPEN | 0.5 to 2 V |
| AIR PUMP: OFF, ASV 1: CLOSE, ASV 2: CLOSE | 11 to 14 V |
| *1 | Air Injection Control Driver |
| *2 | ECM |
| *a | Front view of wire harness connector
(to Air Injection Control Driver) |
Connect terminals DI and SIP of the wire harness connector for the air injection control driver.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Manual Mode / AIR PUMP: ON, ASV 1: OPEN, ASV 2: OPEN.
| Tester Display |
|---|
| Secondary Air Injection Check |
When Manual Mode is selected, the GTS initialization (atmospheric pressure measurement) is performed automatically. The initialization takes 5 seconds. After the initialization, AIR PUMP and ASV operation can be selected.
Start the engine.
Perform the secondary air injection system intrusive operation while the engine is idling.
Measure the voltage between the SIP and E terminals of the ECM connector when the secondary air injection system is on and off.
Turn the ignition switch off.
Do not perform the System Check operation repeatedly as it may cause the damage in the system. If necessary, leave an interval of several minutes between System Check operations.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| A35-4 (SIP) - A35-1 (E) | AIR PUMP: ON, ASV 1: OPEN, ASV 2: OPEN | 0.5 to 2 V |
| AIR PUMP: OFF, ASV 1: CLOSE, ASV 2: CLOSE | 11 to 14 V |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Replace the air injection control driver.
| Proceed to |
|---|
| NEXT |
NEXT
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTC.
Turn the ignition switch off and wait for at least 30 seconds.
| Proceed to |
|---|
| NEXT |
NEXT
Start the engine and warm it up.
Turn the ignition switch off.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.
| Tester Display |
|---|
| Secondary Air Injection Check |
Start the engine after the GTS initialization is finished.
Perform the System Check operation by pressing Next.
After operating the secondary air injection system, perform the following to confirm the secondary air injection system pending codes: Press the Exit button.
Check pending DTCs.
Turn the ignition switch off.
When performing the Secondary Air Injection Check operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
| Result | Proceed to |
|---|---|
| P04919C, P04929C, P24447E and/or P24457F is output | A |
| No pending DTC | B |
A
B