RM35X0E _51 Engine / Hybrid System _078720 7GR-FKS ENGINE CONTROL _0381907 SFI SYSTEM C

7GR-FKS ENGINE CONTROL  SFI SYSTEM  P041211  AIR System Switching Valve "A" Circuit Low Circuit Short to Ground  P041215  AIR System Switching Valve "A" Circuit High Circuit Short to Battery or Open  


DESCRIPTION

The secondary air injection system injects air into the exhaust port of the cylinder head using an electric air pump assembly, starting when the engine is started cold and operating until the catalyst warms up, in order to promote combustion of unburned fuel and decrease the amount of hydrocarbons (HC) and carbon monoxide (CO) in the exhaust gas.

A444312E01
4.115,1.073 4.292,1.073 false 2.073,1.896 2.333,1.896 2.333,1.896 2.563,2.5 false 1.427,2.792 1.844,2.792 false 1.531,3.99 1.396,3.99 false 1.531,4.938 1.281,4.938 false 5.656,3.406 5.563,3.406 5.563,3.406 5.281,3.208 false 5.813,4.542 5.719,4.542 5.719,4.542 5.573,3.979 false 5.813,5.302 5.646,5.302 5.646,5.302 5.552,4.938 false 6.427,2.938 6.427,2.771 false 4.615,2.521 4.396,1.771 false 5.719,1.26 5.833,1.26 5.833,1.26 5.906,1.781 false 3.302,0.365 3.771,0.542 0.469,0.177 10 false ECM 1.958,0.948 2.865,1.302 0.906,0.354 10 false Air Injection Control Driver 0.177,1.802 2.073,2.021 1.896,0.219 10 false Pressure Sensor (for Bank 1) 0.313,2.656 1.448,3.01 1.135,0.354 10 false Emission Control Valve (for Bank 1) 5.781,2.969 7.063,3.167 1.281,0.198 10 false Air Pump Assembly 0.063,4.833 1.271,5.208 1.208,0.375 10 false Heated Oxygen Sensor (for Bank 1) 0.198,3.854 1.417,4.24 1.219,0.385 10 false Air Fuel Ratio Sensor (for Bank 1) 3.677,0.99 4.125,1.177 0.448,0.188 10 false Relay 3.406,1.521 4.458,1.844 1.052,0.323 10 false Pressure Sensor (for Bank 2) 5.729,3.344 6.823,3.677 1.094,0.333 10 false Emission Control Valve (for Bank 2) 5.854,5.24 7.031,5.594 1.177,0.354 10 false Heated Oxygen Sensor (for Bank 2) 5.854,4.469 7.052,4.844 1.198,0.375 10 false Air Fuel Ratio Sensor (for Bank 2) 5.063,1.115 5.708,1.542 0.646,0.427 10 false Air Filter Assembly

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P041211 AIR System Switching Valve "A" Circuit Low Circuit Short to Ground All of the following conditions are met for 3 seconds or more while idling immediately after the engine is started (1 trip detection logic):
·

Secondary air injection system is operating (the air pump assembly and emission control valve are on).

·

Diagnostic signal from the air injection control driver has a duty cycle of 40% (this indicates a short in the emission control valve circuit).

·

Battery voltage is 8 V or higher.


·

Short between emission control valve drive circuit and body ground

·

Air injection control driver

·

Emission control valve set (for bank 1)

·

ECM


Comes on DTC stored SAE Code: P0412
P041215 AIR System Switching Valve "A" Circuit High Circuit Short to Battery or Open All of the following conditions are met for 3 seconds or more while idling immediately after the engine is started (1 trip detection logic):
·

Secondary air injection system is not operating (the air pump assembly and emission control valve are off).

·

Diagnostic signal from the air injection control driver has a duty cycle of 40% (this indicates an open in the emission control valve circuit).

·

Battery voltage is 8 V or higher.


·

Open in emission control valve drive circuit

·

Air injection control driver

·

Emission control valve set (for bank 1)

·

ECM


Comes on DTC stored SAE Code: P0412

MONITOR DESCRIPTION

This DTC indicates an open or short circuit in the circuit containing the emission control valve set of the secondary air injection system. The air injection control driver performs diagnosis of the air pump assembly, emission control valve set (for bank 1) and itself, and sends the results of this diagnosis to the ECM as a duty signal. When the ECM receives a signal indicating a malfunction in the air pump assembly, emission control valve set or air injection control driver, it illuminates the MIL and stores a DTC.

CONFIRMATION DRIVING PATTERN

NOTICE:
·

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.



1.

Start the engine and warm it up.

2.

Turn the ignition switch off.

3.

Connect the GTS to the DLC3.

4.

Turn the ignition switch to ON.

5.

Turn the GTS on.

6.

Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).

7.

Turn the ignition switch off and wait for at least 30 seconds.

8.

Turn the ignition switch to ON and turn the GTS on.

9.

Enter the following menus: Powertrain / Engine / Utility / Secondary Air Injection Check / Automatic Mode.

10.

Start the engine after the GTS initialization is finished.

11.

Perform the System Check operation by pressing Next.

12.

Perform the following to confirm the secondary air injection system pending DTCs: Press Exit.

13.

Enter the following menus: Powertrain / Engine / DTC.

14.

Read pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



15.

After Secondary Air Injection Check is completed, check All Readiness by entering the following menus: Powertrain / Engine / Utility / All Readiness.

16.

Input the DTC: P041211 or P041215.

17.

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



HINT:
·

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 the DTC judgment result again.




WIRING DIAGRAM

A439421E03
5.948,1.083 6.292,1.302 0.344,0.219 10 false N1 5.938,4.938 6.302,5.177 0.365,0.24 10 false A1 5.948,1.719 6.302,1.948 0.354,0.229 10 false N1 5.948,2.979 6.323,3.229 0.375,0.25 10 false E1 5.958,2.344 6.281,2.563 0.323,0.219 10 false A1 5.958,0.885 6.219,1.083 0.26,0.198 10 false 25 5.958,1.531 6.24,1.76 0.281,0.229 10 false 19 5.958,2.156 6.229,2.385 0.271,0.229 10 false 14 5.969,2.781 6.25,3 0.281,0.219 10 false 13 5.958,5.396 6.219,5.625 0.26,0.229 10 false 23 5.958,4.74 6.167,4.969 0.208,0.229 10 false 24 5.958,6.031 6.156,6.25 0.198,0.219 10 false 22 6.26,1.073 6.781,1.302 0.521,0.229 10 false MREL 6.271,1.698 6.698,1.927 0.427,0.229 10 false AIDI 6.26,2.333 6.698,2.51 0.438,0.177 10 false AIRV 6.271,2.969 6.698,3.146 0.427,0.177 10 false AIRP 6.26,4.906 6.792,5.167 0.531,0.26 10 false AIP 6.281,5.563 6.781,5.771 0.5,0.208 10 false VCAI 6.292,6.24 6.75,6.458 0.458,0.219 10 false EAIP 4.49,4.698 4.74,4.896 0.25,0.198 10 false +B 4.74,4.938 5.094,5.115 0.354,0.177 10 false AIP 4.771,5.573 5.021,5.75 0.25,0.177 10 false VC 4.802,6.229 5.052,6.406 0.25,0.177 10 false E2 4.406,6.438 4.792,6.667 0.385,0.229 10 false GND 3.781,1.708 4.167,1.969 0.385,0.26 10 false A35 3.781,2.229 4.135,2.448 0.354,0.219 10 false A34 3.781,2.75 4.125,2.99 0.344,0.24 10 false A34 5.156,1.531 5.406,1.76 0.25,0.229 10 false 2 5.167,2.156 5.365,2.375 0.198,0.219 10 false 3 5.156,2.792 5.375,3.031 0.219,0.24 10 false 4 4.26,3.698 4.448,3.917 0.188,0.219 10 false 6 3.865,3.083 4.073,3.271 0.208,0.188 10 false 1 3.865,2.052 4.042,2.26 0.177,0.208 10 false 1 3.875,2.573 4.063,2.781 0.188,0.208 10 false 2 3.865,1.531 4.063,1.74 0.198,0.208 10 false 5 4.125,1.698 4.448,1.948 0.323,0.25 10 false +B 4.125,2.229 4.594,2.448 0.469,0.219 10 false BATT 4.135,2.75 4.469,2.969 0.333,0.219 10 false VP 4.146,3.26 4.427,3.479 0.281,0.219 10 false E 4.458,3.469 4.719,3.677 0.26,0.208 10 false VV 1.292,3.75 2.5,4.01 1.208,0.26 10 false AIR PMP NO. 1 0.708,1.719 1,1.927 0.292,0.208 10 false A 0.729,1.521 0.927,1.719 0.198,0.198 10 false 1 1.656,2.031 2.385,2.229 0.729,0.198 10 false EFI MAIN 0.99,1.854 1.688,2.156 0.698,0.302 10 false EFI-MAIN 2.427,1.708 2.698,1.906 0.271,0.198 10 false 1E 2.427,1.073 2.677,1.26 0.25,0.188 10 false 1E 0.688,1.094 0.948,1.313 0.26,0.219 10 false 1E 2.458,1.51 2.635,1.698 0.177,0.188 10 false 9 2.479,0.885 2.646,1.063 0.167,0.177 10 false 8 0.74,0.906 0.896,1.094 0.156,0.188 10 false 4 2.219,5.021 2.542,5.208 0.323,0.188 10 false A33 0.885,2.333 2.719,2.604 1.833,0.271 10 false No. 1 Integration Relay 2.219,5.198 2.927,5.583 0.708,0.385 10 false Air Pump Assembly 4.688,6.927 5.042,7.104 0.354,0.177 10 false E30 6.448,6.74 6.844,6.979 0.396,0.24 10 false ECM 0.698,6.052 1.448,6.281 0.75,0.229 10 false Battery 4.646,4.448 4.833,4.646 0.188,0.198 10 false 5 5.135,4.833 5.354,5.063 0.219,0.229 10 false 3 5.125,5.49 5.281,5.688 0.156,0.198 10 false 2 5.125,6.146 5.313,6.344 0.188,0.198 10 false 4 4.625,6.719 4.792,6.948 0.167,0.229 10 false 1 3.115,4.573 3.292,4.781 0.177,0.208 10 false 2 3.104,5.583 3.271,5.781 0.167,0.198 10 false 4 0.135,0.125 1.135,0.385 1,0.26 12 false for Bank 1: 4.844,1.698 5.115,1.948 0.271,0.25 10 false DI 4.75,2.344 5.083,2.573 0.333,0.229 10 false SIV 4.771,2.958 5.083,3.156 0.313,0.198 10 false SIP 5.073,1.708 5.479,1.969 0.406,0.26 10 false A35 5.073,2.344 5.458,2.552 0.385,0.208 10 false A35 5.083,2.969 5.448,3.208 0.365,0.24 10 false A35 4.427,3.677 4.781,3.938 0.354,0.26 10 false A35 3.781,3.271 4.146,3.51 0.365,0.24 10 false A35 4.677,7.094 7.156,7.302 2.479,0.208 10 false Emission Control Valve Set (for Bank 1) 4.844,3.698 5.927,4.094 1.083,0.396 10 false Air Injection Control Driver 3.281,4.792 3.531,4.99 0.25,0.198 10 false +B 3.302,5.396 3.688,5.625 0.385,0.229 10 false GND 5.938,5.594 6.302,5.833 0.365,0.24 10 false A1 5.938,6.25 6.302,6.49 0.365,0.24 10 false A1 0.521,5.115 1.594,5.313 1.073,0.198 10 false FL MAIN

CAUTION / NOTICE / HINT

HINT:
·

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.

·

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.



PROCEDURE

1.INSPECT EMISSION CONTROL VALVE SET (FOR BANK 1)
a.

Inspect the emission control valve set (for bank 1).

Click hereEngine / Hybrid System>7GR-FKS (EMISSION CONTROL)>AIR SWITCHING VALVE (w/ Secondary Air Injection System)>INSPECTION


Result:
Result
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (EMISSION CONTROL VALVE SET (FOR BANK 1) - BODY GROUND)

NG

REPLACE EMISSION CONTROL VALVE SET (FOR BANK 1)

Click hereEngine / Hybrid System>7GR-FKS (EMISSION CONTROL)>AIR SWITCHING VALVE (w/ Secondary Air Injection System)>REMOVAL


2.CHECK HARNESS AND CONNECTOR (EMISSION CONTROL VALVE SET (FOR BANK 1) - BODY GROUND)
a.

Disconnect the emission control valve set (for bank 1) connector.


b.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
E30-1 (GND) - Body ground Always Below 1 Ω



Result:
Result
OK
NG



OK

3.CHECK HARNESS AND CONNECTOR (EMISSION CONTROL VALVE SET (FOR BANK 1) - AIR INJECTION CONTROL DRIVER)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.CHECK HARNESS AND CONNECTOR (EMISSION CONTROL VALVE SET (FOR BANK 1) - AIR INJECTION CONTROL DRIVER)
a.

Disconnect the emission control valve set (for bank 1) connector.


b.

Disconnect the air injection control driver connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
E30-5 (+B) - A35-6 (VV) Always Below 1 Ω
E30-5 (+B) or A35-6 (VV) - Body ground and other terminals Always 10 kΩ or higher



Result:
Result
OK
NG



OK

REPLACE AIR INJECTION CONTROL DRIVER

Click hereEngine / Hybrid System>7GR-FKS (EMISSION CONTROL)>AIR INJECTION DRIVER (w/ Secondary Air Injection System)>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR