A Direct Ignition System (DIS) has been adopted. The DIS improves the ignition timing accuracy, reduces high–voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor. The DIS is a 2–cylinder simultaneous ignition system which ignites 2 cylinders simultaneously with 1 ignition coil. In the 2–cylinder simultaneous ignition system, each of the 2 spark plugs is connected to the end of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark plugs. The sparks of the 2 spark plugs pass simultaneously from the center electrode to the ground electrode. The ECM determines ignition timing end outputs the ignition signals (IGT) for each cylinder. Based on IGT signals, the igniter controls the primary ignition signals (IGC) for all ignition coils. At the same time, the igniter also sends an ignition confirmation signal (IGF) as a fail–safe measure to the ECM.
Showing posts with label high voltage. Show all posts
Showing posts with label high voltage. Show all posts
Wednesday, June 2, 2010
2002 Toyota Tacoma Igniter Circuit Malfunction
2:34 AM by onesecond
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Labels: air fuel ratio, center electrode, confirmation, dis, ecm, ground electrode, high voltage, ignition coils, igt, obd ii scan tool, reliability, signal circuit, spark plug, spark plugs, sparks, timing accuracy, Toyota, toyota tacoma
Labels: air fuel ratio, center electrode, confirmation, dis, ecm, ground electrode, high voltage, ignition coils, igt, obd ii scan tool, reliability, signal circuit, spark plug, spark plugs, sparks, timing accuracy, Toyota, toyota tacoma
Saturday, May 15, 2010
2000-2002 G20 Mil ON Rear O2 Sensor DTC
10:04 PM by onesecond
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Labels: bank 1, diagnosis results, dtc, dtcs, ecm, figure 1, high voltage, Infiniti, max voltage, o2 sensor, oxygen sensor, self diagnosis
Labels: bank 1, diagnosis results, dtc, dtcs, ecm, figure 1, high voltage, Infiniti, max voltage, o2 sensor, oxygen sensor, self diagnosis
If a 2000 to 2002 G20 has a MIL "On" and any of the following DTCs stored in the ECM:
• P0138 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Max. Voltage Monitoring)
• P0139 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Response Monitoring)
• P0140 Heated Oxygen Sensor 2 (Rear) (Bank 1) (High Voltage)
Start with the Service Procedure to find out if the bulletin applies to this vehicle. If it does apply, complete the Service Procedure to repair the incident, if it should occur.
• P0138 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Max. Voltage Monitoring)
• P0139 Heated Oxygen Sensor 2 (Rear) (Bank 1) (Response Monitoring)
• P0140 Heated Oxygen Sensor 2 (Rear) (Bank 1) (High Voltage)
Start with the Service Procedure to find out if the bulletin applies to this vehicle. If it does apply, complete the Service Procedure to repair the incident, if it should occur.
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