Part 3

FA20 ENGINE CONTROL: SFI SYSTEM: P1603; Engine Stall History; 2013 MY FR-S [03/2012 -]
P1603 - Engine Stall History (Continued)

41. CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)

(a) Disconnect the mass air flow meter connector.

(b) Disconnect the ECM connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for open):

Standard Resistance (Check for short):

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.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

42. PERFORM DRIVE TEST

(a) Connect the Techstream to the DLC3.

(b) Start the engine and warm it up until the engine coolant temperature stabilizes.

HINT
The A/C switch and all accessory switches should be off.

(c) Idle the engine.

(d) Using the Techstream, read the value of Calculate Load in the Data List.

Standard:

NG -- REPLACE MASS AIR FLOW METER Removal
OK -- Continue to next step.

43. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

(d) Idle the engine.

(e) Enter the following menus: Powertrain / Engine / Active Test / Control the Injection Volume for A/F Sensor.

(f) Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

Standard:

Result

HINT
The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

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

44. CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE)

(a) Disconnect the air fuel ratio sensor connector.

(b) Turn the ignition switch to ON.

Standard Resistance (Check for short):

HINT
* *1: A long time had elapsed after stopping the engine.
* *2: A long time had not elapsed after stopping the engine.

B -- READ FREEZE FRAME DATA
A -- 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.

Result

HINT
This step is not directly related to engine stall.

B -- INSPECT ENGINE COOLANT TEMPERATURE SENSOR

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

48. INSPECT THERMOSTAT

HINT
For the thermostat inspection, refer to the following procedures Testing and Inspection.

Result

HINT
This step is not directly related to engine stall.

B -- INSPECT ENGINE COOLANT TEMPERATURE SENSOR

A -- REPLACE THERMOSTAT Removal

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.

Result

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

50. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

HINT
For the engine coolant temperature sensor inspection, refer to the following procedures Testing and Inspection.

Result

B -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR Removal
A -- Continue to next step.

51. CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR)

(a) Disconnect the ECM connector.

(b) Disconnect the engine coolant temperature sensor connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for open):

Standard Resistance (Check for short):

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.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems

52. CHECK IGNITION SYSTEM

(a) Perform ignition system On-vehicle Inspection Testing and Inspection.

NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK -- Continue to next step.

53. 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.

Result

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

54. CHECK INTAKE SYSTEM

(a) Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.] Intake System.

HINT
* If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
* If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.

OK:

There is no air leakage.

NG -- REPAIR OR REPLACE INTAKE SYSTEM
OK -- Continue to next step.

55. CHECK INTAKE SYSTEM

(a) Check the intake system.

* Inspect the brake booster assembly Testing and Inspection.

* Inspect the mass air flow meter Inspection.

* Check the PCV hose Testing and Inspection.

* Inspect the PCV valve Testing and Inspection.

* Inspect the purge valve Testing and Inspection.

Result

B -- READ FREEZE FRAME DATA

A -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

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

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(c) Warm up the engine.

(d) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank1) or Control the VVT Linear (Bank2).

HINT
When performing the Active Test, make sure the A/C is on and the shift lever is in P, N or neutral.

(e) Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

OK:

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 on, 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 Removal
OK -- Continue to next step.

57. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE - ECM)

(a) Disconnect the camshaft timing oil control valve connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(c) Disconnect the ECM connector.

(d) Measure the voltage according to the value(s) in the table below.

Standard Resistance (Check for open):

Standard Resistance (Check for short):

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.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

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

(a) Connect the Techstream to the DLC3.

(b) Turn the Techstream on.

(c) Warm up the engine.

(d) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).

HINT
When performing the Active Test, make sure the A/C is on and the shift lever is in P, N or neutral position.

(e) Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

OK:

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 on, 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 Removal
OK -- Continue to next step.

59. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE - ECM)

(a) Disconnect the camshaft timing oil control valve connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(c) Disconnect the ECM connector.

(d) Measure the voltage according to the value(s) in the table below.

Standard Resistance (Check for open):

Standard Resistance (Check for short):

B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- Continue to next step.