Part 3
2ZR-FE ENGINE CONTROL: SFI SYSTEM: P1604; Startability Malfunction; 2013 MY Corolla [07/2012 -]
P1604 - Startability Malfunction
15. 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
*: Compression loss may have occurred in the engine assembly.
B -- INSPECT FUEL INJECTOR ASSEMBLY
C -- CHECK AND REPAIR ENGINE ASSEMBLY
D -- READ FREEZE FRAME DATA
A -- REPLACE ENGINE COOLANT TEMPERATURE SENSOR Removal
16. INSPECT FUEL INJECTOR ASSEMBLY
(a) Check that no carbon is stuck to the fuel injector assembly.
OK:
No carbon present.
NG -- REPLACE FUEL INJECTOR ASSEMBLY Removal
OK -- Continue to next step.
17. 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:
B -- PERFORM SIMULATION TEST
A -- REPAIR OR REPLACE FUEL SYSTEM
18. 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
*1: If the engine coolant temperature is 40°C (104°F) or less (after stopping the engine and the vehicle is not driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.
*2: If the engine coolant temperature is 40 to 90°C (104 to 194°F) (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from a fuel injector.
*3: If the engine coolant temperature is 90°C (194°F) or more (2 to 5 minutes have passed after stopping the engine), there may be a problem with the pressure regulator failing to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.
B -- CHECK FUEL INJECTOR ASSEMBLY
A -- Continue to next step.
19. CHECK FUEL PRESSURE
HINT
For the fuel pressure inspection, refer to the following procedures Fuel System.
(a) Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.
Standard:
147 kPa (1.5 kgf/cm2, 21 psi) or higher (5 minutes after stopping the engine)
HINT
If the engine cannot be started, read the values after cranking the engine.
Result:
B -- PERFORM SIMULATION TEST
A -- REPLACE PRESSURE REGULATOR Removal
20. CHECK FUEL INJECTOR ASSEMBLY
(a) Clean the inside of the surge tank with compressed air.
(b) After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
Result:
HINT
If the concentration is 4000 ppm or higher, a fuel injector may have a sealing problem.
B -- CHECK THROTTLE BODY
A -- Continue to next step.
21. CHECK FUEL INJECTOR ASSEMBLY
(a) Inspect the fuel injectors Testing and Inspection.
Result:
B -- CHECK THROTTLE BODY
A -- REPLACE FUEL INJECTOR ASSEMBLY Removal
22. CHECK THROTTLE BODY
(a) Check if carbon is in the air flow passage.
Result:
B -- CHECK INTAKE SYSTEM
A -- CLEAN OR REPLACE THROTTLE BODY Removal
23. CHECK INTAKE SYSTEM
(a) Check the intake system for vacuum leaks Intake System.
OK:
No leaks from intake system.
NG -- REPAIR OR REPLACE INTAKE SYSTEM
OK -- Continue to next step.
24. PERFORM SIMULATION TEST
(a) Check if the engine can be started.
Result:
B -- CHECK MALFUNCTION CONDITION
A -- END
25. CHECK MALFUNCTION CONDITION
(a) Confirm the problem symptoms.
HINT
The problem symptoms below can be determined by reading the freeze frame data.
Result:
HINT
* If there is hesitation (cranking speed is slow and combustion occurs before passing TDC) during the initial cranking period, the battery charge may be insufficient or the starter may be malfunctioning.
* *1: If there is no initial combustion, a wire harness may be malfunctioning, or the ignition or fuel system may be malfunctioning.
* *2: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the camshaft timing oil control valve may have a problem returning.
* *3: If the initial combustion and starter turnoff occur late, the fuel injection volume may be incorrect (too low or too high).
* *4: for Automatic transaxle models
* *5: for Manual transaxle models
B -- PERFORM SIMULATION TEST
C -- CHECK FUEL INJECTOR ASSEMBLY
D -- INSPECT MASS AIR FLOW METER
E -- INSPECT ENGINE COOLANT TEMPERATURE SENSOR
A -- Continue to next step.
26. PERFORM SIMULATION TEST
(a) When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely.
Result:
HINT
* *1: The battery may be fully depleted or there may be excess engine friction.
* *2: for Automatic transaxle models
* *3: for Manual transaxle models
B -- CHECK STARTER ASSEMBLY
C -- INSPECT BATTERY
A -- Continue to next step.
27. INSPECT BATTERY
(a) Inspect the battery Component Tests and General Diagnostics.
NG -- CHARGE OR REPLACE BATTERY
OK -- Continue to next step.
28. CHECK ENGINE ASSEMBLY
(a) Check that the crankshaft rotates smoothly when rotating it by hand.
OK:
Crankshaft rotates smoothly.
HINT
Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.
NG -- REPAIR OR REPLACE ENGINE ASSEMBLY
OK -- INSPECT STARTER ASSEMBLY Testing and Inspection
29. CHECK STARTER ASSEMBLY
(a) Remove the starter assembly Removal.
(b) Check for starter pinion gear wear and damage.
Standard:
There is no wear or damage.
Result
(c) Install the starter assembly Installation.
B -- REPLACE DRIVE PLATE & RING GEAR SUB-ASSEMBLY Removal
C -- REPLACE FLYWHEEL SUB-ASSEMBLY Removal
A -- REPLACE STARTER ASSEMBLY Removal
30. INSPECT BATTERY
(a) Inspect the battery Component Tests and General Diagnostics.
NG -- CHARGE OR REPLACE BATTERY
OK -- Continue to next step.
31. INSPECT STARTER ASSEMBLY
(a) Inspect the starter assembly Testing and Inspection.
NG -- REPLACE STARTER ASSEMBLY Removal
OK -- CHECK CRANKING HOLDING FUNCTION CIRCUIT Cranking Holding Function Circuit