The secondary air system is designed to enable catalytic converter to heat up and reach its operating temperature more quickly after a cold start.
Principle of operation
Due to extra mixture enrichment during cold-start phase, an increased amount of unburnt hydrocarbons is carried in exhaust gas. The secondary air system improves the afterburning (oxidation) process in the catalytic converter, and in this way reduces toxic emissions. Heat generated by oxidation accelerates "light off" of catalytic converter and significantly improves exhaust gas quality during warm-up.
Showing posts with label engine control module. Show all posts
Showing posts with label engine control module. Show all posts
Monday, November 1, 2010
Audi A6 C5 4.2L V8 5V BAS Secondary Air Injection Maintenance
10:19 PM by onesecond
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Labels: 2l, air injection, Audi, audi a6, bas, catalytic converter, cold start, cylinder head, engine control module, exhaust gas, gas quality, inlet valve, mixture, oxidation process, ports, principle, toxic emissions, unburnt hydrocarbons, vacuum
Labels: 2l, air injection, Audi, audi a6, bas, catalytic converter, cold start, cylinder head, engine control module, exhaust gas, gas quality, inlet valve, mixture, oxidation process, ports, principle, toxic emissions, unburnt hydrocarbons, vacuum
Monday, May 31, 2010
556H Honda/Acura Immobilizer Bypass Module
3:37 AM by onesecond
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Labels: Acura, auto program, capability, engine control module, Honda, honda acura, key cylinder, program sequence, proper tools, remote start, unique auto, vehicle electronics
Labels: Acura, auto program, capability, engine control module, Honda, honda acura, key cylinder, program sequence, proper tools, remote start, unique auto, vehicle electronics
The Honda/Acura Immobilizer anti-theft system uses a low-power transponder mounted in the head of the ignition key. When the vehicle is started, the Key Cylinder Module converts the transponder signal and sends a secure, coded signal to the Engine Control Module. If the signal to the Engine Control Module is correct, the vehicle will start.
Thursday, May 27, 2010
2005–2007 Toyota Corolla R & R Engine Control Module
6:41 PM by onesecond
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Labels: 2007 toyota corolla, automatic transaxle, automatic transmission, corolla, diagnostic procedures, drivetrain, engine control module, engine control module ecm, improvements, information system, powertrain, powertrain control, solenoid, solenoid valve, technical information, tis, Toyota, toyota corolla, transaxle, transaxle system
Labels: 2007 toyota corolla, automatic transaxle, automatic transmission, corolla, diagnostic procedures, drivetrain, engine control module, engine control module ecm, improvements, information system, powertrain, powertrain control, solenoid, solenoid valve, technical information, tis, Toyota, toyota corolla, transaxle, transaxle system
Some 2005 – 2007 model year Corolla and Matrix vehicles equipped with an automatic transaxle may exhibit a harsh shift condition and a M.I.L. “ON” with DTC P2716 stored. Improvements have been made to the Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) to reduce the possibility of this condition occurring. Use the following procedure to repair the vehicle.
2006 Toyota Corolla Engine Control Module Removal and Installation
6:17 PM by onesecond
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Labels: 2006 toyota corolla, corolla, delco, denso, engine control module, glove compartment, negative terminal, screw, screws, Toyota, toyota corolla, wire harness
Labels: 2006 toyota corolla, corolla, delco, denso, engine control module, glove compartment, negative terminal, screw, screws, Toyota, toyota corolla, wire harness
REPLACEMENT 1. DISCONNECT BATTERY NEGATIVE TERMINAL
2. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY
a. Remove the screw from the glove compartment door stoppers.
b. Deform the upper part of the glove compartment door assembly to release the stoppers.
c. Pull the glove compartment door assembly upward to remove it.
3. REMOVE ECM
a. Remove the 2 clips using a clip remover, then open the cover.
b. Disconnect the 4 ECM connectors.
2. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY
a. Remove the screw from the glove compartment door stoppers.
b. Deform the upper part of the glove compartment door assembly to release the stoppers.
c. Pull the glove compartment door assembly upward to remove it.
3. REMOVE ECM
a. Remove the 2 clips using a clip remover, then open the cover.
b. Disconnect the 4 ECM connectors.
Saturday, May 15, 2010
2005 GMC Truck Envoy 2WD Erratic Speedometer Operation
4:21 PM by onesecond
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Labels: 2007 buick rainier, 2008 chevrolet trailblazer, 7x, buick, buick rainier, callout, Chevrolet, chevrolet trailblazer, engine control module, GMC, gmc envoy, gmc truck, oldsmobile, oldsmobile bravada, poor connections, powertrain, powertrain control module, rpo, Saab, speedometer needle
Labels: 2007 buick rainier, 2008 chevrolet trailblazer, 7x, buick, buick rainier, callout, Chevrolet, chevrolet trailblazer, engine control module, GMC, gmc envoy, gmc truck, oldsmobile, oldsmobile bravada, poor connections, powertrain, powertrain control module, rpo, Saab, speedometer needle
Erratic Speedometer Operation Or Speedometer Needle Shakes Above 60 mph (96
km/h) (Repair Poor Connection At Ground G108)
Models:
2004-2007 Buick Rainier
2002-2008 Chevrolet TrailBlazer Models
2002-2008 GMC Envoy Models
2002-2004 Oldsmobile Bravada
2005-2008 Saab 9-7X
with 4.2L Engine Only (VIN S - RPO LL8)
km/h) (Repair Poor Connection At Ground G108)
Models:
2004-2007 Buick Rainier
2002-2008 Chevrolet TrailBlazer Models
2002-2008 GMC Envoy Models
2002-2004 Oldsmobile Bravada
2005-2008 Saab 9-7X
with 4.2L Engine Only (VIN S - RPO LL8)
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