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Emissions circuit containing fuses,relays, air pump,solenoid, & related wiring

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Hi Bob,I love that free word too,here's a link to a repair guide,just join and become a member,it's free and you can use there repair guides like me.

Posted on Apr 29, 2013

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I have a 2004 cadidillac deville with code P0410 & P0420


Circuit Description
The secondary air injection (AIR) system reduces exhaust emissions after initial engine starts. This occurs when the engine start-up coolant temperature and the intake air temperature (IAT) are at the parameters indicated in Conditions for Running. The AIR pump will continue to operate until Closed Loop operation is achieved.
The powertrain control module (PCM) activates the AIR system by simultaneously supplying a ground to the AIR pump relay and the AIR solenoid relay. The AIR pump forces pressurized fresh air into the pipes/hoses and past the AIR check valve into the bank 1 exhaust manifold, accelerating the catalyst operation. When the AIR system is inactive, the AIR shut-off valve prevents airflow in either direction.
The PCM can detect an AIR system airflow fault by monitoring the heated oxygen sensor (HO2S) bank 1 sensor 1 during normal Closed Loop engine operation. This is an active test. The active test will pass or fail based on the response from the HO2S 1. The active test consists of three tests run at 3-second intervals. A decreasing HO2S 1 voltage parameter response indicates that the AIR system is functioning properly.
The AIR system consists of the following components:
• The AIR pump
• The AIR pump relay
• The AIR injection electronic shut-off valve
• The AIR injection solenoid relay
• The fuses, and the related wiring
• The pipes/hoses
When the PCM detects an insufficient HO2S 1 response, DTC P0410 sets.

DTC P0420 Catalyst System Low Efficiency
Videos on youtube suggest you watch P0420 P0420 How To Diagnose Bad Catalytic Converter EricTheCarGuy How to test an electric air pump P0410 case study

Sep 04, 2016 | 2004 Cadillac Deville

1 Answer

What does the starter relay fuse for a 1998 Isuzu rodeo look like and where is is located in the fuse box


Crystal, this is what I found on the Rodeo starter fuse/relay.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Jul 06, 2016 | Isuzu Cars & Trucks

1 Answer

2006crownvictoria fuel pump relay fuse keeps blowing tried resetting relay fuse still blowing fuses why &how do i fix problem


There is a short to ground on that circuit . Go to youtube an check out videos on how to fine an automotive electrical short . Also watch videos on basic electrical trouble shooting , how to read a wiring diagram . Go http://www.bbbind.com/free_tsb.html free wiring diagrams . Then trace the circuit , look for bare wirers touching body ground or shorted components etc...

Mar 21, 2016 | Cars & Trucks

1 Answer

2006 jetta 2.5 liter


causes could be - Faulty Vacuum hoses damaged
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
- Air bypass solenoid leaking/blocked or stuck open/closed
- Air diverter valve leaking/blocked or stuck open/closed

An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. Vacuum is then applied to both Air combination valve diaphragms which opens the shut off valves. The PCM enables both circuits simultaneously when Air system operations id desired. When the AIR system is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut off valves prevent air flow in either direction.

Apr 08, 2014 | 2006 Volkswagen Jetta

1 Answer

Ignition problem


Check if the small wire on the starter has power with the key held in crank position. If battery voltage there, either bad battery cables or connections, or the starter solenoid has a malfunction. If no power when key held in start, it could be the safety switch (a clutch interlock switch on manual transmissions, or a park/neutral switch on automatics). You may need a wiring diagram to see the start circuit from ignition switch to the starter solenoid-some have a start relay in that circuit.
Find wiring diagrams at http://www.bbbind.com/technical.html
Free TSB's and wiring diagrams for every make and model.

Feb 09, 2014 | Cars & Trucks

1 Answer

Secondary air ignition malfuction


This code can set for more than the pump not running. It could be a sensor issue that reads it, too high of pressure, just to name a few.

Circuit/System Verification
Verify that DTC P0412, P0418, P2430-P2433, P2440, or P2444 are not set.
* If any of the DTCs are set, perform those diagnostics first.
Ignition ON, command the AIR Pump Relay ON and OFF with a scan tool. The AIR pump should turn ON and OFF.
* If the AIR pump does not turn ON or OFF, refer to Secondary Air Injection Pump Malfunction
Command the AIR Solenoid ON and OFF with a scan tool. The AIR solenoid valve should click with each command.
* If the AIR solenoid valve does operate as specified, refer to Secondary Air Injection Solenoid Valve Malfunction.
Engine running, command the AIR Pump Relay ON with a scan tool while observing the AIR Pressure Sensor parameter. The reading should be 15-20 kPa above the BARO reading.
* If less than the specified range, refer to Secondary Air Injection System Pressure Low.
* If greater than the specified range, refer to Secondary Air Injection System Pressure High.
Engine running, command the AIR System ON while observing the AIR Pressure Sensor parameter. The reading should be 7-10 kPa above BARO.
* If less than the specified range, refer to Secondary Air Injection System Pressure Low.
* If greater than the specified range, refer to Secondary Air Injection System Pressure High.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing
Secondary Air Injection Pump Malfunction

Ignition OFF, disconnect the AIR pump relay.
Ignition ON, verify that a test lamp does not illuminate between the controlled output circuit terminal 87 and ground.
* If the test lamp illuminates, test the controlled output circuit for a short to voltage.
Verify that a test lamp illuminates between the AIR pump relay coil ignition circuit terminal 85 and ground.
* If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the AIR pump relay and/or the AIR solenoid relay.
Verify that a test lamp illuminates between the AIR pump relay switch B+ circuit terminal 30 and ground.
* If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the controlled output circuit for a short to ground.
Ignition OFF, disconnect the harness connector at the AIR pump.
Test for less than 2 ohms between the AIR pump ground circuit terminal B and ground.
* If greater than the specified range, test the ground circuit for an open/high resistance.
Connect the harness connector at the AIR pump.
Connect the J 36169-HD with a 60A fuse between the AIR pump relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. Verify the AIR pump is activated.
* If the AIR pump does not activate, test the controlled output circuit for an open/high resistance. If the circuit tests normal, test or replace the AIR pump.
Remove the J 36169-HD jumper wire.
Connect a test lamp between the AIR pump relay coil ignition circuit terminal 85 and the AIR pump relay control circuit terminal 86.
Ignition ON, command the AIR Pump Relay ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
* If the test lamp is always ON, test the AIR pump relay control circuit for a short to ground. If the circuit tests normal, replace the ECM.
* If the test lamp is always OFF, test the AIR pump relay control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
If all circuits test normal, replace the AIR pump relay.

Secondary Air Injection Solenoid Malfunction
Ignition OFF, disconnect the AIR solenoid relay.
Ignition ON, verify that a test lamp does not illuminate between the controlled output circuit terminal 87 and ground.
* If the test lamp illuminates, test the controlled output circuit for a short to voltage.
Verify that a test lamp illuminates between the AIR solenoid relay coil ignition circuit terminal 86 and ground.
* If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, replace the AIR solenoid relay and/or the AIR pump relay.
Verify that a test lamp illuminates between the AIR solenoid relay switch B+ circuit terminal 30 and ground.
* If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the controlled output circuit for a short to ground.
Ignition OFF, disconnect the harness connector at the AIR solenoid.
Test for less than 2 ohms between the AIR solenoid valve ground circuit terminal 4 and ground.
* If greater than the specified range, test the ground circuit for an open/high resistance.
Connect the harness connector at the secondary AIR solenoid.
Connect a 15A fused jumper wire between the AIR solenoid relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. Verify the AIR solenoid valve is activated.
* If the AIR solenoid valve does not activate, test the controlled output circuit for an open/high resistance. If the circuit tests normal, test or replace the AIR solenoid.
Remove the 15A fused jumper wire.
Connect a test lamp between the AIR solenoid relay coil ignition circuit terminal 86 and the relay coil control circuit terminal 85.
Ignition ON, command the AIR Solenoid ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
* If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the ECM.
* If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the ECM.
If all circuits test normal, replace the AIR solenoid relay.

Secondary Air Injection System Pressure Low
Engine running, inspect for exhaust leaks between the AIR solenoid valve and the catalytic converter.
* If an exhaust leak is detected, repair as necessary.
Ignition OFF, disconnect the AIR pump relay.
Engine running, connect the J 36169-HD with a 60A fuse between the AIR pump relay switch B+ circuit terminal 30 and the controlled output circuit terminal 87. Verify the AIR Pressure Sensor parameter is not 15-20 kPa above BARO.
* If 15-20 kPa above BARO, replace the AIR pump relay.
Ignition OFF, remove the J 36169-HD jumper wire and connect the AIR pump relay.
Remove the air inlet hose at the AIR pump.
Engine running, command the AIR System ON while observing the AIR Pressure Sensor parameter. Verify the reading is not 7-10 kPa above BARO.
* If 7-10 kPa above BARO, the AIR pump inlet hose/pipe assembly is restricted. Remove the restriction or replace the hose/pipe assembly.
Ignition OFF, disconnect the hose at the AIR pump outlet.
Disconnect the hose at the AIR solenoid valve inlet.
Install a length of standard 1 inch I.D. (25.4 mm) hose from the AIR pump outlet to the AIR solenoid valve inlet.
Engine running, command the AIR System ON while observing the AIR Pressure Sensor parameter. Verify the reading is not 7-10 kPa above BARO.
* If 7-10 kPa above BARO, test/inspect AIR pump outlet hoses/pipes for leaks or restrictions.
Test all AIR pump wiring and connections for less than 2 ohms. If the wiring and connections test normal and the hoses/pipes are OK, replace the AIR pump.

Secondary Air Injection System Pressure High
Ignition OFF, remove the AIR solenoid valve.
Connect the AIR pump outlet pipe/hose at the AIR solenoid valve.
Connect the AIR solenoid valve harness at the AIR solenoid valve.
Engine running, command the AIR system ON while observing the AIR Pressure Sensor parameter. The reading should be less than 11 kPa above BARO.
* If greater than the specified value, replace the AIR solenoid valve.
Inspect the AIR solenoid valve gaskets for proper alignment. If normal, test/inspect the AIR solenoid valve outlet pipe, exhaust manifold, and cylinder head for a restriction.

This issue and its repair may be under GM warranty. I think it would be worth your time to check at the dealer.

Hope helps.

Jan 06, 2012 | 2004 Buick Rainier

1 Answer

410 CODE TRAILBLAZER i6 MOTOR


Definition
Secondary Air Injection System fault
Explanation
The air injection system is monitored for faults
Probable Causes
1) Circuit relay defective or fuse open
2) Check connector and wiring
3) AIR pump defective or hoses blocked

You have an air injection problem with the emissions system, check with a tech for any tsb's or recall extended warranty etc that are related to that system. CHECK WARRANTY!

It can be caused by...
Water may have collected in the AIR pump or the vent solenoid and frozen or corroded the pump.
Blown AIR pump fuse due to freezing up.

Possible solutions:
The TSB calls for the replacement of the AIR pump and the installation of a new secondary injection hose.
Replace the AIR pump AND one-way check valve.
Test and clean the AIR pump AND test and replace the one-way air check valve.
Replace the AIR pump inlet hose.
Replace the AIR pump fuse (found under the hood).

You might have to replace a hose or two, or you might need an entire new air pump. A visual inspection from a licensed mechanic will confirm exactly what needs to be replaced, as it can be one of several things, if not multiple problems.

Hope that helps.

Feb 02, 2011 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

1996 caravan replace fuelpump & filter.won't start, so i tested plug at pump, thats good. ground the black wire to frame & it works, ok.but fuel gages does not work. but you turn key on gage jumps....


Have you checked the fuel pump relay under the hood and the fuel pump fuse in the dash?It can't hurt to rule those out first,right?
The fuse and relat diagrams , should be in the owners manual.
Good luck.

Mar 30, 2010 | 1996 Dodge Caravan

1 Answer

Relay Box for 1994 ford mustang cobra


relays are normally in the fuse panel on the left side of dash by knee.

Fuses and Circuit Breakers Location and Values
NOTE: The headlamp switch (11654) has an integral 20-amp circuit breaker.
  • The combination instrument panel fuse and circuit breaker panel contains most of the fuses and circuit breakers used in the system.
  • The fuses and circuit breakers are color-coded by amp rating.
  • The locations and values of the fuses and circuit breakers not contained in the panels are shown in the following chart.


Circuit Circuit Protection and Rating Location Headlamps and High Beam Indicator 20 Amp. CB Integral with Lighting Switch Heated Back Window 16 GA Fuse Link Engine Compartment Power Windows, Power Seat, Power Door Locks 20 Amp. CB Starter Motor Relay Load Circuit Fuse Link In Harness Engine Compartment Lamp Fuse Link In Harness Convertible Top 25 Amp. CB Lower Instrument Panel-Reinforcement


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Cavity Number Fuse Rating Color Circuit Protected A 40 Amp Orange
  • Ignition Switch
B 40 Amp Orange
  • Ignition Switch
C 40 Amp Orange
  • Ignition Switch
D 50 Amp Red
  • Headlamp Switch
  • Instrument Panel Fuses 4, 8 and 16
  • Instrument Panel Circuit Breaker 12
E 20 Amp Light Green
  • PCM
  • Fuel Pump
  • HO2S (3.8L)
  • Canister Purge Solenoid
  • EVR Solenoid
  • Ignition Control Module (3.8L)
  • IAC Solenoid
  • Fuel Injector
  • Automatic Transmission
  • Camshaft Position Sensor (3.8L)
  • MAF Sensor
F 40 Amp Orange
  • Heated Back Window
G 20 Amp Yellow
  • Fuel Pump
H 60 Amp Blue
  • Fan Control
J — — Not Used K 10 Amp Blue
  • Anti-Lock Brake Control Module
L 20 Amp Red
  • Fan Control Monitor (PCM)
M 25 Amp Yellow
  • Horn
  • Foglamps
  • Daytime Running Lights Control Module
N 25 Amp Clear
  • Fuses 5 and 9
P 20 Amp Clear
  • Radio Amplifier
Q 20 Amp Yellow
  • Generator
S 30 Amp Yellow
  • Convertible Top Motor
T 60 Amp —
  • ABS

May 14, 2009 | 1994 Ford Mustang

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