Lexus ES manuals

Lexus ES: Engine Stall History (P160300)

DESCRIPTION

After starting the engine, this DTC is stored when the engine stops without the engine 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 run out of fuel before performing troubleshooting, as this DTC is also stored when the engine stalls due to running out of fuel.

DTC No.

Detection Item

DTC Detection Condition

MIL

Memory

Note

P160300

Engine Stall History

After monitoring for startability problems (P160400) finishes and 2 seconds or more have elapsed after starting the engine, with the engine running, the engine stops (the engine speed drops to 200 rpm or less) without the engine switch being operated for 0.5 seconds or more (1 trip detection logic).

Does not come on

DTC stored

SAE Code: P1603

Trouble Area

Ignition system

  • Spark plug
  • Ignition coil assembly

Fuel system

  • Port fuel injector assembly
  • Direct fuel injector assembly
  • Fuel pump (for low pressure side)
  • Fuel pump assembly (for high pressure side)
  • Fuel pump control circuit
  • Fuel line
  • Purge VSV system
  • Fuel quality (existence of foreign matter, degradation)

Intake and exhaust systems

  • Mass air flow meter sub-assembly
  • Intake system

    (Air leaks or deposit accumulation)

  • Throttle body with motor assembly
  • Air fuel ratio sensor
  • Heated oxygen sensor
  • Cam timing oil control solenoid assembly
  • Camshaft timing oil control valve assembly
  • Variable Valve Timing system (VVT system)

Other control systems

  • ECM
  • Wire harness or connector
  • Knock control sensor
  • Engine coolant temperature sensor

Engine

  • Water inlet with thermostat sub-assembly
  • Engine assembly

High load from another system

  • Air conditioning system
  • Power steering system
  • Electrical load signal system
  • A/T system

CAUTION / NOTICE / HINT

HINT:

  • DTC P160300
    • In contrast to normal malfunction diagnosis for components, circuits and systems, DTC P160300 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall.

      As this DTC can be stored as a result of certain user actions, even if the DTC is output, if the customer makes no mention of problems, clear the DTC without performing any troubleshooting and return the vehicle to the customer.

    • As DTCs may be stored when an Active Test or learning is performed, make sure to clear the DTCs before returning the vehicle to the customer.
    • DTCs related to engine stall problems may be detected due to operations performed by the user. The following are a few examples. Ask questions to the user about how the vehicle is operated and give advice as necessary.
      • Ran out of fuel
      • Rolled down on a slope and engine stalls (backed up in D, moved forward in R)
    • If any other DTCs are output, perform troubleshooting for those DTCs first.
  • CUSTOMER PROBLEM ANALYSIS

    Use any information from the customer problem analysis about the condition of the vehicle at the time when the problem occurred (how the engine stopped, conditions when the engine was restarted, etc.) as a reference.

    Symptom

    Suspected Area

    Engine vibration occurs and engine stops

    • Abnormal mass air flow meter sub-assembly output due to existence of foreign matter
    • Abnormal air fuel ratio due to malfunction of air fuel ratio sensor or heated oxygen sensor, air leaks in intake system or insufficient fuel supply

    Engine stops with no engine vibration

    Ignition system, injection stoppage, high load from external parts

    Engine can be started with accelerator pedal depressed

    Insufficient air volume

    Engine stalls or is difficult to start immediately after engine stalled, regardless of whether engine is cold or warm

    Deposits in intake system or combustion chamber caught temporarily on intake or exhaust valve

  • FREEZE FRAME DATA
    • Read freeze frame data using the Techstream. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
    • When confirming the freeze frame data, be sure to check all multi freeze frame data.

      Click here

    • When confirming the freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
    • Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, no load, and shift lever in D or N) and compare this data with the freeze frame data.
  • PRECAUTIONS
    • Inspections take into account the fact that the malfunction may not have recurred and place emphasis on checking the vehicle conditions present at the time when the malfunction occurred.
    • When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.

PROCEDURE

1.

CHECK FOR ANY OTHER DTCS OUTPUT

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

Only DTC P160300 is output

A

DTCs other than P160300 are output

B

HINT:

  • When DTC P160300 and P160500 are output simultaneously, perform the troubleshooting for P160500 first.
  • Using freeze frame data, confirm the conditions the moment the DTC was stored and after the DTC was stored. This information can be useful when troubleshooting.
B

GO TO DTC CHART

A

2.

READ FREEZE FRAME DATA (ISC F/B LEARN TORQUE)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

Click here

Freeze Frame Data Item for DTC P160300

Result

Suspected Area

Action

Proceed to

ISC F/B Learn Torque

Less than 30 Nm

-

Go to the next step

A

30 Nm or higher

Throttle body with motor assembly

Go to ENGINE STALLS (from step 11)

B

B

GO TO ENGINE STALLS

A

3.

READ FREEZE FRAME DATA (A/F (O2) SENSOR VOLTAGE, SHORT FT AND LONG FT)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

Click here

Freeze Frame Data Item for DTC P160300

Suspected Area

Action

Proceed to

A/F (O2) Sensor Voltage B1S1 and A/F (O2) Sensor Voltage B2S1

Short FT B1S1 and Short FT B2S1

Long FT B1S1 and Long FT B2S1

2.8 V to 3.8 V

-15% to 15%

-15% to 15%

-

Go to ENGINE STALLS

NEXT

3.8 V or higher

15% or higher

-

Fuel pump

Go to ENGINE STALLS (from step 20)

Less than 2.8 V, or 3.8 V or higher

Less than -15%, or 15% or higher

Less than -15%, or 15% or higher

  • Mass air flow meter sub-assembly
  • Air fuel ratio sensor
  • Fuel pump

Go to ENGINE STALLS (from step 15)*

HINT:

*: If the value of A/F (O2) Sensor Voltage B1S1, A/F (O2) Sensor Voltage B2S1, Short FT B1S1, Short FT B2S1, Long FT B1S1 or Long FT B2S1 is as specified, malfunction of a component listed in the "Suspected Area" column of the table is suspected.

NEXT

GO TO ENGINE STALLS

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