Part 3

1NZ-FE ENGINE CONTROL: SFI SYSTEM (for Hatchback): P1603, P1605: Engine Stall History
P1605 - Rough Idling- (Continued)

31. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions present when the DTC was stored which are recorded in the freeze frame data Freeze Frame Data (from 07/2011).





Result





HINT
This step is not directly related to engine stall.

B -- INSPECT ENGINE COOLANT TEMPERATURE SENSOR

C -- CLEAR DTC
A -- Continue to next step.

32. INSPECT THERMOSTAT

(a) Inspect the thermostat Testing and Inspection.

Result





HINT
This step is not directly related to engine stall.

B -- INSPECT ENGINE COOLANT TEMPERATURE SENSOR

A -- REPLACE THERMOSTAT Removal (from 07/2011)

33. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





B -- CLEAR DTC
A -- Continue to next step.

34. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

(a) Inspect the engine coolant temperature sensor Testing and Inspection.

Result





HINT
* Even if the results are normal, the engine coolant temperature sensor may have been malfunctioning. If there are no problems with other parts, replace the engine coolant temperature sensor (refer to step 57).
* Perform "Inspection After Repair" after replacing the engine coolant temperature sensor Programming and Relearning.

B -- REPLACE MALFUNCTIONING PARTS

A -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR Removal (from 07/2011)

35. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





HINT
* Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, no load, and shift lever in D or N) and compare these data with the freeze frame data.
* *1: If the throttle with motor body assembly has a temporary problem in which it cannot fully close, the intake air volume and engine speed increase. As a result, the ISC learning amount becomes less than the standard. At this time, if the throttle with motor body assembly returns to normal and fully closes, the intake air volume will be insufficient and the engine may stall.
* *2: If carbon accumulates on the throttle with motor body assembly and the intake air volume decreases, the ISC learning amount is increased to maintain the idling speed. If this situation continues, the ISC learning amount reaches the upper limit, the idling speed cannot be maintained causing idling to become unstable, and the engine may stall.

B -- INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY

C -- PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)
A -- Continue to next step.

36. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY

(a) Check for foreign matter and signs that the throttle with motor body assembly was stuck, and also check that the valve and shaft move smoothly during operation.

Result





HINT
* Even if the results are normal, the throttle with motor body assembly may have been malfunctioning. Continue this inspection procedure until step 41, and if there are no problems with other parts, replace the throttle body (refer to step 57).
* Perform "Inspection After Repair" after replacing the throttle with motor body assembly Programming and Relearning.

B -- PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)

A -- REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Removal (From 07/2011)

37. INSPECT THROTTLE WITH MOTOR BODY ASSEMBLY

(a) Check if carbon is in the air flow passage of the throttle with motor body assembly.

Result





HINT
* Even if the results are normal, the throttle with motor body assembly may have been malfunctioning. Continue this inspection procedure until step 41, and if there are no problems with other parts, replace the throttle with motor body assembly (refer to step 57).
* Perform "Inspection After Repair" after replacing the throttle with motor body assembly Programming and Relearning.

B -- PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)

A -- REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY Removal (From 07/2011)

38. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)

(a) Perform the Active Test, referring to DTC P0011 inspection procedure P0011.

HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
* If the camshaft timing oil control valve is stuck at the advanced side, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.

NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Removal (from 07/2011)
OK -- Continue to next step.

39. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





HINT
* Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, no load, and shift lever in D or N) and compare these data with the freeze frame data.
* Even if the results are normal, the knock sensor may have been malfunctioning. If there are no problems with other parts, replace the knock sensor (refer to step 57).

B -- REPLACE MALFUNCTIONING PARTS
A -- Continue to next step.

40. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

(a) Inspect the engine coolant temperature sensor Testing and Inspection.

HINT
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor Programming and Relearning.

NG -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR Removal (from 07/2011)
OK -- Continue to next step.

41. INSPECT MASS AIR FLOW METER

(a) Inspect the mass air flow meter (intake air temperature sensor) Inspection (from 07/2011).

HINT
Perform "Inspection After Repair" after replacing the mass air flow meter or knock sensor Programming and Relearning.

NG -- REPLACE MASS AIR FLOW METER Removal (from 07/2011)

OK -- REPLACE KNOCK SENSOR Removal (from 07/2011)

42. INSPECT TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT)

(a) Check the harnesses and connectors, referring to DTC P0300 inspection procedure P0300.

HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* Make sure there is not an excessive amount of force applied to the wire harness.
* A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

NG -- CHECK FUEL INJECTOR CIRCUIT Fuel Injector Circuit (from 07/2011)
OK -- Continue to next step.

43. INSPECT TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL)

(a) Check the harnesses and connectors, referring to DTC P0351 inspection procedure P0351.

HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* Make sure there is not an excessive amount of force applied to the wire harness.
* A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

NG -- REPAIR POWER SOURCE CIRCUIT P0351
OK -- Continue to next step.

44. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





B -- READ FREEZE FRAME DATA
A -- Continue to next step.

45. READ FREEZE FRAME DATA (IDLE SPARK ADVN CTRL #)

(a) Change the location of the ignition coil for the cylinder whose Idle Spark Advn Ctrl (#1 to #4) was 4° or more in step 44.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Using the Techstream, select [Idle Spark Advn Ctrl (#1 to #4)] of the Data List.

Result





HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* Perform "Inspection After Repair" after replacing the No. 1 ignition coil Programming and Relearning.

B -- REPLACE NO. 1 IGNITION COIL Removal (from 07/2011)
A -- Continue to next step.

46. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





*1: for Automatic Transaxle.

*2: for Manual Transaxle.

HINT
* Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, no load, and shift lever in D or N) and compare these data with the freeze frame data.
* The normal value for the ISC learning amount is engine displacement (liters) x 0.9.
* Even if the results are normal, the power steering system may have been malfunctioning. Continue this inspection procedure until step 48 (or step 49), and if there are no problems with other parts, inspect the power steering system (refer to step 57).

A -- CHECK AIR CONDITIONING SYSTEM How To Proceed With Troubleshooting (from 07/2011)

C -- READ FREEZE FRAME DATA
B -- Continue to next step.

47. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





HINT
* *1: If the Electrical Load Signal display changes from OFF to ON or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
* The normal value for the ISC learning amount is engine displacement (liters) x 0.9.
* Even if the results are normal, the electrical load signal system and/or the automatic transaxle system may have been malfunctioning. Continue this inspection procedure until step 48, and if there are no problems with other parts, inspect the electrical load system and/or the automatic transaxle system (refer to step 57).

B -- CHECK AUTOMATIC TRANSAXLE SYSTEM

C -- READ FREEZE FRAME DATA

A -- CHECK GENERATOR CIRCUIT Testing and Inspection

48. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





HINT
Even if the results are normal, the park/neutral position switch assembly and/or automatic transaxle system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or automatic transaxle system (refer to step 57).

B -- CHECK AUTOMATIC TRANSAXLE SYSTEM

C -- REPLACE MALFUNCTIONING PARTS

A -- CHECK PARK/NEUTRAL POSITION SWITCH ASSEMBLY

49. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





HINT
* *1: If the Electrical Load Signal display changes from OFF to ON or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
* The normal value for the ISC learning amount is engine displacement (liters) x 0.9.
* Even if the results are normal, the electrical load signal system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system (refer to step 57).

B -- REPLACE MALFUNCTIONING PARTS

A -- CHECK GENERATOR CIRCUIT Testing and Inspection

50. READ FREEZE FRAME DATA

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored Freeze Frame Data (from 07/2011).

Result





B -- INSPECT TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT)
A -- Continue to next step.

51. INSPECT MASS AIR FLOW METER

(a) Remove the mass air flow meter.

(b) Check for foreign matter in the air flow passage of the mass air flow meter.

Result





(c) Install the mass air flow meter.

HINT
* Even if the results are normal, the mass air flow meter may have been malfunctioning. Continue this inspection procedure until step 56, and if there are no problems with other parts, replace the mass air flow meter (refer to step 57).
* Perform "Inspection After Repair" after replacing the mass air flow meter Programming and Relearning.

B -- INSPECT TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT)

A -- REPLACE MASS AIR FLOW METER Removal (from 07/2011)

52. INSPECT TERMINAL VOLTAGE (FUEL INJECTOR CIRCUIT)

(a) Check the harnesses and connectors, referring to DTC P0300 inspection procedure P0300.

HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* Make sure there is not an excessive amount of force applied to the wire harness.
* A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

NG -- CHECK FUEL INJECTOR CIRCUIT Fuel Injector Circuit (from 07/2011)
OK -- Continue to next step.

53. INSPECT TERMINAL VOLTAGE (POWER SOURCE OF IGNITION COIL)

(a) Check the harnesses and connectors, referring to DTC P0351 inspection procedure P0351.

HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* Make sure there is not an excessive amount of force applied to the wire harness.
* A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

NG -- REPAIR POWER SOURCE CIRCUIT P0351
OK -- Continue to next step.

54. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP/SPEED)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, select the [Control the Fuel Pump/Speed] Active Test.

(d) When performing the Active Test, check for an operating sound from the fuel pump.

OK:





Result





HINT
* Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
* While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
* If the fuel pump operating noise is abnormal, Proceed To step 55.

B -- CHECK FUEL SYSTEM
A -- Continue to next step.

55. INSPECT FUEL PUMP

(a) Inspect the fuel pump Testing and Inspection.

HINT
Perform "Inspection After Repair" after replacing the fuel pump Programming and Relearning.

NG -- REPLACE FUEL PUMP Removal (from 07/2011)

OK -- CHECK FUEL PUMP CONTROL CIRCUIT Fuel Pump Control Circuit (from 07/2011)

56. CHECK FUEL SYSTEM

(a) Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.

Result





HINT
If there is foreign matter such as iron particles on the fuel pump, remove the foreign matter.

B -- REPLACE MALFUNCTIONING PARTS

A -- REPAIR OR REPLACE FUEL SYSTEM

57. REPLACE MALFUNCTIONING PARTS

(a) If the malfunction could not be identified in steps 3 to 24, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed.





(b) If the malfunction could not be identified in steps 25 to 34, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed.





(c) If the malfunction could not be identified in steps 35 to 41, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed.





(d) If the malfunction could not be identified in steps 42 to 49, inspect and repair the part which is suspected to be malfunctioning according to the step where an inspection was performed.





(e) If the malfunction could not be identified in steps 50 to 56, replace the part which is suspected to be malfunctioning according to the step where an inspection was performed.





HINT
* Referring to the chart, inspect and repair or replace the part from the step where an inspection was performed.
* Perform "Inspection After Repair" after replacing or servicing parts related to engine operation. Refer to detailed information in Initialization Programming and Relearning.

NEXT -- Continue to next step.

58. CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

59. PERFORM CONFIRMATION DRIVING PATTERN

(a) Check if engine stall symptoms are present.

HINT
If any engine stall symptoms are present, recheck for DTCs and freeze frame data and perform an inspection.

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS

OK -- END