By Justin Hardacre
Fuel Induction & Injection Systems manage the fuel and air/fuel mixture as it enters the engine. Fuel Induction Service emphasizes cleaning with a chemical agent to maximize efficiency. Fuel injection service removes water from the system, lubricates valves, removes carbon buildup, and cleans the throttle body & plate. The most common sign that your vehicle needs Toyota Fuel Induction & Injection System Service is reduced fuel efficiency. One of the best ways to promote maximum fuel efficiency is with routine Toyota Fuel Induction & Injection System Service.
Condition: The current engine active test “Control the Injection Mode” is not operating as desired when controlling the direct injectors manually on 2GR-FKS engines. To avoid this condition, the technician should raise engine rpm when changing back and forth between direct injection and port injection active tests. Using Techstream, navigate to Active Test > Control the Injection Mode. Perform the same when switching from port injection active test to direct injection. Utilizing the data list to confirm the switch occurs when commanded with the Injection Mode parameter.
JohnGD said:Otherwise use of Tier-1 gas should keep them clean without problems. If needed, I'd use Chevron Techron Complete Fuel System Cleaner. $200 is a joke every 30,000 miles.Otherwise use of Tier-1 gas should keep them clean without problems. If needed, I'd use Chevron Techron Complete Fuel System Cleaner. Even when I was only using Chevron gas.
The current engine active test “Control the Injection Mode” is not operating as desired when controlling the direct injectors manually on 2GR-FKS engines. When direct injection is started and then stopped using the active test, current ECU logic does not turn off the direct injectors and can cause DTCs P017200, P017500 and P0160300. To avoid this condition, technicians should raise engine rpm when changing back and forth between the Direct Injection and Port Injection active tests. Using Techstream, navigate to Active Test > Control the injection mode. Verify that the Execute conditions are met to perform the Active Test.
The air injection system is utilized to improve cold-start emissions, and is a federally mandated emissions requirement. In an ongoing effort to ensure customer satisfaction, Toyota has recently introduced a Customer Support Program to extend the warranty coverage on air injection pumps and air switching valves. When the condition is verified, the dealer will replace the air injection pumps and air switching valves in the affected vehicles. Not every model produced in this time period will display air injection system malfunctions. The condition described impacts only a small number of air injection pumps and air switching valves.
Hewitt Tech is the Home of the Original Secondary Air Injection System (SAIS) Bypass Kits for Toyota & Lexus vehicles. The bypass kit and kit addons can prevent many of the trouble codes caused by mechanical or electrical failure. Most common failures occur in secondary Air Pumps, Air Switching Valves and Air Injection Drivers. On average, replacing the Secondary Air Injection System can cost between $2,000 - $3,000. That said, if you want to get out of Limp Mode, turn off your Check Engine Light, avoid future failures and save thousands of dollars; a Hewitt Tech Secondary Air Injection Bypass kit is what you need.
DescriptionDESCRIPTION:Hewitt Tech Generation 1 Secondary Air Injection System Bypass Kit (Plug & Play)The Hewitt Tech (HT) Gen 1 Bypass Kit prevents operation of the SAIS at cold soak start. We recommend the Gen 1 Plug & Play Bypass kit for both professionals and DIY mechanics because of the ease of install and proven performance. The following are Mechanical Trouble codes the Gen 1 Bypass Kit typically addresses*:P1441 – Switching Valve No.2 Stuck Open Bank 1P1442 – Switching Valve No.2 Stuck Close Bank 1P1444 – Switching Valve No.2 Stuck Open Bank 2P1445 – Switching Valve No.2 Stuck Close Bank 2P2440 – Switching Valve Stuck Open Bank 1P2441 – Switching Valve Stuck Closed Bank 1P2442 – Switching Valve Stuck Open Bank 2P2443 – Switching Valve Stuck Closed Bank 2P2445 – Pump Stuck OFF Bank 1**P2447 – Pump Stuck Off Bank 2The following are Trouble codes NOT addressed by the Gen 1 Bypass. However, if you are getting any electrical codes our recommended solution is the Gen 2 Bypass kit. Pressure Sensor CodesP2431 – Air Flow / Pressure Sensor Circuit Range / Performance Bank1P2432 – Air Flow / Pressure Sensor Circuit Low Bank 1P2433 – Air Flow / Pressure Sensor Circuit High Bank 1P2436 – Air Flow / Pressure Sensor Circuit Range / Performance Bank 2P2437 – Air Flow / Pressure Sensor Circuit Low Bank 2P2438 – Air Flow / Pressure Sensor Circuit High Bank 2P106B – Pressure Sensor Correlation / Evap.
