No. 13 Knocking/Pinging-Acceleration/Cruise: Procedure

1. Retrieve any DTCs using the Techstream.

   Refer to ON-BOARD DIAGNOSTIC TEST

2. Are any DTCs present?

   Result

   Result
   Yes
   No

Result:  2

Yes 

GO TO THE APPLICABLE DTC INSPECTION. 

1. Refer to DIAGNOSTIC TROUBLE CODE CHART

Result:  1

No 

See step  2

1. Drain the remaining fuel in the fuel tank and add the specified fuel.
2. Leave idling for approx. 15 min to refill the hose with fuel.
3. Does the symptom disappear?

   Result

   Result
   Yes
   No

Result:  2

Yes 

SYMPTOM TROUBLESHOOTING COMPLETED. 

1. (If customer has used fuel additive, give them advice not to use it)

Result:  1

No 

See step  3

1. Access the Engine coolant temperature PID using the Techstream.

   Refer to ON-BOARD DIAGNOSTIC TEST

   NOTE:

   • While performing this step, always operate the vehicle in a safe and lawful manner.
   • When the Techstream is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the Techstream using the PID/DATA MONITOR AND RECORD capturing function and inspect later.
2. Is the Engine coolant temperature PID value less than 116°C {241°F} during driving?

   Result

   Result
   Yes
   No

Result:  2

No 

THE CAUSE OF THIS CONCERN COULD BE FROM THE COOLING SYSTEM OVERHEATING. 

1. Perform the symptom troubleshooting "NO. 17 COOLING SYSTEM CONCERNS-OVERHEATING".

   Refer to NO. 17 COOLING SYSTEM CONCERNS-OVERHEATING 

Result:  1

Yes 

See step  4

1. Remove all spark plugs.

   Refer to REMOVAL

2. Inspect the spark plug.

   Refer to INSPECTION

3. Is there any malfunction?

   Result

   Result
   Yes
   No

Result:  2

Yes 

REPLACE THE SPARK PLUG. 

1. Refer to REMOVAL

Result:  1

No 

See step  5

1. Verify if there is air suction into the intake air system (such as between MAF sensor and intake valve, vacuum hose).
2. Is there any malfunction?

   Result

   Result
   Yes
   No

Result:  2

Yes 

REPAIR OR REPLACE THE MALFUNCTIONING PART ACCORDING TO THE INSPECTION RESULTS. 

Result:  1

No 

See step  6

1. Access the following PIDs using the Techstream:

   Refer to ON-BOARD DIAGNOSTIC TEST

   1. Manifold absolute pressure sensor
   2. Barometric pressure
2. Measure the intake manifold vacuum when idling (no load).

   Refer to ON-VEHICLE INSPECTION

3. Does the difference between PIDs Barometric pressure and Manifold absolute pressure sensor nearly match the intake manifold vacuum value?

   Result

   Result
   Yes
   No

Result:  2

No 

REPLACE THE MAP SENSOR/IAT SENSOR NO. 2. 

1. Refer to INSPECTION

Result:  1

Yes 

See step  7

1. Inspect the MAF sensor.

   Refer to INSPECTION

2. Is there any malfunction?

   Result

   Result
   Yes
   No

Result:  2

Yes 

REPLACE THE MAF SENSOR/IAT SENSOR NO. 1. 

1. Refer to REMOVAL

Result:  1

No 

See step  8

1. Inspect the IAT sensor No. 2 resistance.

   Refer to INSPECTION

2. Is there any malfunction?

   Result

   Result
   Yes
   No

Result:  2

Yes 

REPLACE THE MAP SENSOR/IAT SENSOR NO. 2. 

1. Refer to REMOVAL

Result:  1

No 

See step  9

1. Inspect the ECT sensor No. 1 resistance.

   Refer to INSPECTION

2. Is there any malfunction?

   Result

   Result
   Yes
   No

Result:  2

Yes 

REPLACE THE ECT SENSOR NO. 1. 

1. Refer to REMOVAL

Result:  1

No 

See step  10

1. Inspect the KS.

   Refer to INSPECTION

2. Is there any malfunction?

   Result

   Result
   Yes
   No

Result:  1

No 

See step  12

Result:  2

Yes 

See step  13

1. If normal, return to the diagnostic index to service any additional symptoms.

   Refer to PROBLEM SYMPTOMS TABLE

2. If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
   1. If the vehicle is repaired, troubleshooting is completed.
   2. If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

END 

1. Remove the accumulated matter in the cylinder head using the following procedure:
   1. Carbon remover
   2. Overhauling
2. Go to the next step.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  11

1. Refer to REMOVAL
2. Then go to the next step.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  11