Circuit description
When the engine does not start or it takes a long period of time to startup even though the starter signal has been input, and when the engine speed drops immediately after startup and stalls, this DTC is output.
The conditions at the time the DTC was output can be checked from the freeze frame data using the SSM3. A part of the engine running conditions under which the engine trouble occurred is recorded in the freeze frame data, which is useful for troubleshooting.
It is necessary to check the fuel level before troubleshooting because startup failure due to running out of gas can also be detected.
| DTC No. |
DTC detection condition |
Suspected parts |
| P1604 |
When any of the following conditions is met (1 trip detection logic):
- When engine speed is less than 500 r/min with the starter signal ON for a certain period of time (differs depending on engine coolant temperature and atmospheric pressure).
- When engine speed drops to 300 r/min immediately after the engine is started (with engine speed 500 r/min or more).
|
- Engine immobilizer system
- Engine ASSY (excessive wear, compression leakage)
- Starter ASSY
- Crankshaft position sensor
- Camshaft position sensor
- E.F.I. water temperature sensor
- Fuel pump
- Fuel pump control circuit
- Fuel pipe
- Fuel injector ASSY (port injection)
- Throttle body
- Pressure regulator
- Battery
- Drive plate
- Spark plug
- Ignition coil circuit
- Intake system
- Camshaft timing oil control valve ASSY
- Intake air flow meter ASSY
- Air/fuel ratio sensor
- Valve timing
- Fuel
- Purge VSV
- Intake valve
- Exhaust valve
- ECM
|