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Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 70 (Engine Control System (2GR-FE) (Diagnostic Codes (P00351-P1603) & Circuit Tests)) >> SFI System >> DTC P1603: Engine Stall History; DTC P1605: Rough Idling >> Description

DTC P1603: Engine Stall History; DTC P1605: Rough Idling: Description

WARNING: This page is about a different variant/trim than selected.

P1603 

After starting the engine, this DTC is stored when the engine stops without the ignition switch being operated.

Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.

It is necessary to check if the vehicle has ran out of fuel before performing troubleshooting, as this DTC is also stored when the engine stalls due to running out of fuel.

DTC No. DTC Detection Condition Trouble Area
P1603 After monitoring for startability problems (P1604) finishes and 5 seconds or more elapse after starting the engine, with the engine running, the engine stops (the engine speed drops to 200 RPM or less) for 0.5 seconds or more without the ignition switch being operated
(1 trip detection logic).
  • Air leak in intake system
  • Purge VSV
  • Brake booster hose not connected properly
  • Mass air flow meter
  • Engine coolant temperature sensor
  • Wire harness or connector
  • Air fuel ratio sensor
  • Power supply circuit (purge VSV, fuel injector assembly, ignition coil assembly)
  • Fuel pump
  • Fuel pump control system
  • Fuel line
  • Throttle body assembly
  • Camshaft timing oil control valve
  • VVT system
  • Air conditioning system
  • Power steering system
  • Electrical load signal system
  • A/T system
  • Park/neutral position switch
  • ECM

P1605 

This DTC is stored if the engine speed drops below the set speed.

Using the Techstream, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.

It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when idling is unstable due to running out of fuel.

DTC No. DTC Detection Condition Trouble Area
P1605 After 5 seconds or more elapse after starting the engine, with the engine running, the engine speed drops to 400 RPM or less (1 trip detection logic).
  • Air leak in intake system
  • Purge VSV
  • Brake booster hose not connected properly
  • Mass air flow meter
  • Engine coolant temperature sensor
  • Wire harness or connector
  • Air fuel ratio sensor
  • Power supply circuit (purge VSV, fuel injector assembly, ignition coil)
  • Fuel pump (for low pressure)
  • Fuel pump (for low pressure) control system
  • Fuel line
  • Throttle body
  • Camshaft timing oil control valve
  • VVT system
  • Knock sensor
  • Ignition coil
  • Fuel injector for port injection
  • Spark plug(s)
  • Air conditioning system
  • Power steering system
  • Electrical load signal system
  • A/T system
  • Park/neutral position switch
  • ECM
  1. Reference waveforms showing a normal cold engine start 
    Fig 1: Identifying Waveform 1
    GTY170886Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Reference waveforms showing a normal warm engine start 
    Fig 2: Identifying Waveform 2
    GTY187332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Reference waveforms showing an engine stop after normal idling 
  4. Reference values when there is an air leak in the intake system during rough idling 
    FREEZE FRAME DATA P1605 ROUGH IDLING

    Engine
    Current P1605: Rough Idling
    Time Freeze Frame Data
    Item Data1 Data2 Data3 Data4 Data5 Unit
    Engine Speed 662 655 571 284 114 RPM
    Calculate Load 27.4 27.0 20.7 18.8 91.7 %
    Vehicle Load 13.7 13.7 3.5 6.6 16.8 %
    MAF 3.18 3.17 0.71 0.68 0.67 gm/s
    Atmosphere Pressure 100 100 100 100 100 kPa
    Coolant Temp 85 85 85 85 85 °C
    Intake Air 26 26 26 26 26 °C
    Battery Voltage 13.515 13.515 13.264 12.892 12.792 V
    Throttle Sensor Volt % 14.5 14.5 14.5 16.8 17.6 %
    Throttle Sensor #2 Volt % 45.4 45.4 45.4 49.0 49.4 %
    Throttle Sensor Position 0.0 0.0 0.0 0.0 0.0 %
    Throttle Motor DUTY 14.5 14.5 14.5 16.8 17.2 %
    Injector (Port) 2278 2229 1800 2273 2273 μs
    Injection Volume (Cylinder 1) 0.100 0.100 0.100 0.100 0.100 ml
    Fuel Pump/Speed Status ON ON ON ON ON  
    EVAP (Purge) VSV 0.0 0.0 0.0 0.0 0.0 %
    Evap Purge Flow 0.0 0.0 0.0 0.0 0.0 %
    Purge Density Learn Value 0.0 0.0 0.0 0.0 0.0  
    EVAP System Vent Valve OFF OFF OFF OFF OFF  
    EVAP purge VSV OFF OFF OFF OFF OFF  
    Purge Cut VSV Duty 0.0 0.0 0.0 0.0 0.0 %
    Target Air-Fuel Ratio 0.998 0.998 0.998 0.998 0.840  
    AF Lambda B1S1 1.001 0.995 1.006 1.043 1.069  
    AF Lambda B2S1 1.000 0.997 1.003 1.032 1.045  
    AFS Voltage B1S1 3.283 3.254 3.312 3.483 3.532 V
    AFS Voltage B2S1 3.288 3.268 3.302 3.449 3.483 V
    O2S B1S2 0.835 0.835 0.835 0.835 0.835 V
    O2S B2S2 0.820 0.820 0.820 0.820 0.820 V
    Short FT #1 3.125 3.125 4.687 4.687 0.00 %
    Long FT #1 3.906 3.906 3.906 3.906 3.906 %
    Total FT #1 0.066 0.070 0.070 0.070 0.070  
    Sort FT #2 1.562 1.562 2.343 2.343 0.000 %
    Long FT #2 0.000 0.000 0.000 0.000 0.000 %
    Total FT #2 0.011 0.011 0.011 0.015 0.015  
    Fuel System Status #1 CL CL CL CL OL  
    Fuel System Status #2 CL CL CL CL OL  
    IGN Advance 19.5 19.0 22.0 22.0 22.0 deg
    Knock Feedback Value -1.5 -1.5 -1.5 -1.5 -1.5 °CA
    Knock Correct Learn Value 17.0 17.0 17.0 17.0 17.0 °CA
    Starter Signal Close Close Close Close Close  
    Ambient Temp for A/C 16 16 16 16 16 °C
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