Part 4
FA20 ENGINE CONTROL: SFI SYSTEM: P1603; Engine Stall History; 2013 MY FR-S [03/2012 -]
P1603 - Engine Stall History (Continued)
61. INSPECT ENGINE COOLANT TEMPERATURE SENSOR
HINT
For the engine coolant temperature sensor inspection, refer to the following procedures Testing and Inspection.
NG -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR Removal
OK -- Continue to next step.
62. 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 -- Continue to next step.
63. INSPECT MASS AIR FLOW METER (INTAKE AIR TEMPERATURE SENSOR)
(a) Inspect the mass air flow meter Inspection.
HINT
If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.
NG -- REPLACE MASS AIR FLOW METER Removal
OK -- Continue to next step.
64. READ VALUE USING TECHSTREAM
(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 IGN Advance and Knock Correct Learn Value in the Data List.
Result
HINT
If the results of the checks performed in steps 56 to 64 were all normal and the sum of ISC Feedback Value and ISC Learning Value in the Data List is 120% of the normal value or more, check for carbon deposits in the throttle with motor body assembly. If there are carbon deposits, clean them off to finish the troubleshooting procedure.
B -- END
A -- CHECK KNOCK SENSOR CIRCUIT P0327
65. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)
(a) Disconnect the fuel injector assembly connectors.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
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 FUEL INJECTOR POWER SOURCE CIRCUIT
OK -- Continue to next step.
66. 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.
67. CHECK 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
* *1: Check not only the on/off state of the air conditioner but also the change in air conditioner load.
* The normal value for the ISC learned value is engine displacement (liters) x 0.9.
* Even if the results are normal, the power steering system and/or A/C system may have been malfunctioning. If there are no problems with other parts, inspect the power steering system and/or A/C system.
B -- CHECK AIR CONDITIONING SYSTEM Initial Inspection and Diagnostic Overview
A -- Continue to next step.
68. CHECK 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
* *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 learned value is engine displacement (liters) x 0.9.
* Even if the results are normal, the electrical load signal system and/or Automatic transmission system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system and/or Automatic transmission system.
B -- CHECK AUTOMATIC TRANSMISSION SYSTEM How to Proceed With Troubleshooting
C -- CHECK GENERATOR CIRCUIT How to Proceed With Troubleshooting
A -- Continue to next step.
69. CHECK 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
Even if the results are normal, the park/neutral position switch assembly and/or Automatic transmission system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or Automatic transmission system.
B -- CHECK AUTOMATIC TRANSMISSION SYSTEM How to Proceed With Troubleshooting
C -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Component Tests and General Diagnostics
70. CHECK 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 -- CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)
A -- Continue to next step.
71. CHECK MASS AIR FLOW METER
(a) Remove the mass air flow meter.
(b) Check for foreign matter in the airflow passage of the mass airflow meter.
Result
B -- REPLACE MASS AIR FLOW METER Removal
A -- Continue to next step.
72. 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.
73. 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.
74. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)
(a) Disconnect the fuel injector assembly connectors.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
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 FUEL INJECTOR POWER SOURCE CIRCUIT
OK -- Continue to next step.
75. 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.
76. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP DUTY)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty.
(e) When performing the Active Test, check for an operating sound from the fuel pump.
Standard:
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 77.
B -- CHECK FUEL SYSTEM
A -- Continue to next step.
77. INSPECT FUEL PUMP ASSEMBLY
(a) Inspect the fuel pump assembly Inspection.
NG -- REPLACE FUEL PUMP ASSEMBLY Removal
OK -- CHECK FUEL PUMP CONTROL CIRCUIT (LOW PRESSURE SIDE) Fuel Pump Control Circuit
78. CHECK FUEL SYSTEM
(a) Check the fuel system.
* Check the fuel pump operation.
* Check the fuel leaks.
* Check the fuel pressure.
* Check the fuel pressure (for high pressure).
* Perform the Active Test [D-4S (Fuel Cut)].
HINT
For the fuel system On-vehicle Inspection, refer to the following procedures Fuel System.
Result
B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- Continue to next step.
79. CHECK FUEL SYSTEM
(a) Check for foreign matter such as iron particles around the fuel pump assembly (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, fuel filter or fuel tank, remove the foreign matter.
B -- REPAIR OR REPLACE FUEL SYSTEM
A -- Continue to next step.
80. CHECK FUEL SYSTEM
(a) Check the fuel system.
* Check the fuel pump operation.
* Check the fuel leaks.
* Check the fuel pressure.
* Check the fuel pressure (for high pressure).
* Perform the Active Test [D-4S (Fuel Cut)].
HINT
For the fuel system On-vehicle Inspection, refer to the following procedures Fuel System.
NG -- REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK -- END
81. CLEAR DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
NEXT -- END