Part 6
2ZR-FE ENGINE CONTROL: SFI SYSTEM: P1603, P1605; Engine Stall History; 2013 MY Corolla [07/2012 -]
P1605 - Rough Idling
70. 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
* *: If the Electrical Load Signal 1 (2) 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 may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system.
B -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems
A -- CHECK GENERATOR CIRCUIT Problem Symptoms Table
71. 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 (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)
A -- Continue to next step.
72. CHECK MASS AIR FLOW METER SUB-ASSEMBLY
(a) Remove the mass air flow meter sub-assembly Removal.
(b) Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly.
Result
B -- REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Removal
A -- Continue to next step.
73. CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
(a) Check the harnesses and connectors, referring to DTC P0102 inspection procedure P0102.
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.
74. 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 SUB-ASSEMBLY Removal
OK -- Continue to next step.
75. CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)
(a) Check the harness and connectors, referring to Fuel Injector Circuit inspection procedure Fuel Injector Circuit.
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 ASSEMBLY POWER SOURCE CIRCUIT Fuel Injector Circuit
OK -- Continue to next step.
76. 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.
77. 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) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
(e) Check whether the fuel pump operating sound occurs when performing the Active Test on the Techstream.
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 78.
B -- CHECK FUEL SYSTEM
A -- Continue to next step.
78. INSPECT FUEL PUMP
(a) Inspect the fuel pump Inspection.
NG -- REPLACE FUEL PUMP Removal
OK -- CHECK FUEL PUMP CONTROL CIRCUIT Fuel Pump Control Circuit
79. CHECK FUEL SYSTEM
(a) Check the fuel system.
* Check the fuel pump operation.
* Check the fuel leaks.
* Check the fuel pressure.
* Perform the Active Test [Control the All Cylinder 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.
80. 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, fuel filter or fuel tank, remove the foreign matter.
B -- REPAIR OR REPLACE FUEL SYSTEM
A -- Continue to next step.
81. CHECK FUEL SYSTEM
(a) Check the fuel system.
* Check the fuel pump operation.
* Check the fuel leaks.
* Check the fuel pressure.
* Perform the Active Test [Control the All Cylinder 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
82. 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