Inspection steps

1. Connect the SSM3 to the DLC3.
2. Turn the ignition switch to ON.
3. Turn on the SSM3.
4. Follow the SSM3 on-screen instructions to check the DTC. (Refer to MONITOR STATUS CHECK )

   Result

   Result	Go to
   P119E, P119F, or P219A is output.	A
   DTCs other than P119E, P119F, or P219A are also output.	B

   NOTE: If any DTCs other than P119E, P119F, or P219A are output, troubleshoot them first.

   B: To corresponding DTC chart (refer to DTC TABLE )

   A: Go to next step

1. Connect the SSM3 to the DLC3.
2. Turn the ignition switch to ON.
3. Using the SSM3, check the status of the vehicle at the time when the DTC was recorded, which is recorded in the freeze frame data. (Refer to CHECKING/CLEARING DTC )

   Freeze frame data entries for DTC P219A

   Fig 1: Checking Freeze Frame Data

   Courtesy of SUBARU OF AMERICA, INC.
   • Vehicle speed
   • Engine Speed
   • Calculated load value
   • [Idle switch (APS)]
   • Short term fuel trim B1
   • Long term fuel trim B1
   • Misfire counter #1 to misfire counter #4
   NOTE: If the sum of [Short term fuel trim B1] of [Long term fuel trim B1] is a positive value, the fuel modulation is lean. If the sum is a negative value, it is rich.

   DTCs recorded during idling	It can be concluded that trouble was detected because of the [System Too Lean] (which was detected by the speed variation of the crankshaft).
   DTCs recorded during driving	It can be concluded that trouble was detected because of the [System Too Rich] (which was detected by the air/fuel ratio sensor)

   Next

1. Connect the SSM3 to the DLC3.
2. Start the engine.
3. Turn on the SSM3.
4. Warm up the engine.
   NOTE: You must turn the A/C switch and all accessory switches to OFF, and put the shift lever in P, N, or neutral.
5. Select the following menu items using the SSM3. [Inspection of BRZ]/[Each System Check]/[Engine Control System]/[Work Support]/[System Operation Check Mode]/[Injection Volume]
   NOTE: When you have selected [System Operation Check Mode] for [Injection Volume] (injection volume is 0%), if the misfire counts increase, proceed to step  6, "Intake system inspection".
6. With the engine idling, run the [Injection Volume].
7. Check the misfire counts (values for [Cylinder #1 Misfire Count] to [Cylinder #4 Misfire Count] of [Current Data Display & Save]) as you reduce the injection volume in increments of 5 %.
   CAUTION: Do not reduce the injection volume in increments of 20 % or more.

   Result: Cylinders which did not increase their misfire count can be determined to have rich fuel modulation. Therefore, perform the inspection paying attention to those cylinders.

   Next

1. Make sure that exhaust gas is not leaking from connections of exhaust pipes and installation areas of sensors.

   Criteria: There is no exhaust leakage.

   NG: Repair of exhaust gas leakage

   OK: Go to next step

1. Inspect the intake system. (refer to ON-VEHICLE INSPECTION )

   NG: Repair or replacement of intake system

   OK: Go to next step

1. Inspect the spark plug of cylinder causing the unbalance. (refer to CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FA20) )

   NG: Replacement of the spark plug (refer to REMOVAL )

   OK: Go to next step

1. Perform the spark inspection. (refer to CIRCUIT FIGURE )
   NOTE: If no malfunction is found in the spark inspection, proceed to the next step.

   Next

1. Measure the compression of the misfiring cylinder. (refer to ENGINE (FA20) )

   NG: Engine inspection to determine the cause of the low compression

   OK: Go to next step

NG: See the FUEL INJECTOR CIRCUIT (Refer to )

OK: Go to next step

NG: Repair or replacement of wiring harness or connector

OK: Go to next step

1. Inspect the injection of the fuel injector assembly. (Amount of fuel and quality of the injection pattern) (refer to INSTALLATION and UNIT INSPECTION )

   Output DTCs	Fuel injector assemblys to be inspected
   P219A only	For port injection and direct injection
   P119E and P219A	For port injection
   P119F and P219A	For direct injection
   P119E, P119F, and P219A	For port injection and direct injection

   NG: Replacement of the fuel injector assembly (refer to INJECTOR ASSEMBLY (FA20/PORT FUEL INJECTION) and REMOVAL )

   OK: Go to next step

1. If you cannot determine the cause of the trouble symptom even if you perform troubleshooting procedures, perform the following inspection.
2. Inspect the intake valve for precipitation buildup.
   NOTE: Because precipitation buildup on the intake valve may have caused the DTC to be recorded, remove the cylinder head, and inspect the intake valve.

   Next

1. Connect the SSM3 to the DLC3.
2. Turn the ignition switch to ON.
3. Turn on the SSM3.
4. Follow the SSM3 on-screen instructions to clear the DTCs. (Refer to CHECKING/CLEARING DTC )
5. Turn the ignition switch to OFF, and wait for 30 seconds.
6. Turn the ignition switch to ON.
7. Turn on the SSM3.
8. Perform test drive. (Refer to "TEST DRIVE " under "Description of functions")
9. Follow the SSM3 on-screen instructions to check the DTC. (Refer to CHECKING/CLEARING DTC )

   Criteria: P219A is not output.

   Next: Complete