What Are the Possible Causes of DTC P1320 Lexus?
NOTE: The causes listed may not be a complete list of all potential problems, and there may be other causes.
- Faulty ignition coil #5
- Ignition coil #5 harness is open or shorted
- Poor electrical connection in ignition coil #5 circuit
- Faulty Engine Control Module (ECM)
How to Repair DTC P1320 Lexus?
Check the “Possible Causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When Is Lexus P1320 Code Detected?
The P1320 code relates to ignition coil #5 and is set when there is no IGF signal to the ECM during engine operation.
What Are the Possible Symptoms of Lexus P1320 Code?
- Check Engine Light on (or soon-to-be-on Service Engine Soon warning light)
What Does Lexus P1320 Code Mean?
The Direct Ignition System (DIS) is a 1-cylinder ignition system that fires one cylinder with an ignition coil. The igniter is an integral part of the ignition coil. The Engine Control Module (ECM) determines the ignition timing and sends an ignition signal (IGT) for each cylinder. Based on the IGT signals, the power transistors in the igniter cut off the current to the ignition coil’s primary coil, causing the ignition coil to fire the spark plug. After giving a command to deactivate the primary circuit on the IGT wire, the ECM monitors the IGF circuit to ensure that the primary switching has occurred.