Dtc P2118 Throttle Actuator Control Motor Current Range / Performance

Engine. Camry. Acv40 Gsv40
2Gr-Fe Engine Control System. Camry. Acv40 Gsv40

DESCRIPTION

FAIL-SAFE

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FUSE (ETCS FUSE)

INSPECT ECM (+BM VOLTAGE)

CHECK HARNESS AND CONNECTOR (ECM - ETCS FUSE, ETCS FUSE - BATTERY)

DTC P2118 Throttle Actuator Control Motor Current Range / Performance


DESCRIPTION

The ETCS (Electronic Throttle Control System) has a dedicated power supply circuit. When the monitored voltage (+BM) is low (less than 4 V), the ECM determines that there is a malfunction in the ETCS and cuts off the current to the throttle actuator.
When the voltage becomes unstable, the ETCS itself becomes unstable. For this reason, when the voltage is low, the current to the throttle actuator is cut. If repairs are made and the system returns to normal, turn the ignition switch off. The ECM then allows the current to flow to the throttle actuator so that it can be restarted.
HINT:
The ETCS does not use a throttle cable.

Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P2118 Throttle Actuator Control Motor Current Range / Performance


DTC No.
DTC Detection Condition
Trouble Area
P2118
Open in ETCS power source (+BM) circuit
(1 trip detection logic)
  1. Open in ETCS power source circuit
  1. ETCS fuse
  1. ECM

FAIL-SAFE

When this DTC, as well as other DTCs relating to ETCS (Electronic Throttle Control System) malfunctions, is set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to the throttle actuator off, and the throttle valve is returned to a 6° throttle angle by the return spring. The ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue running at a minimal speed. If the accelerator pedal is depressed gently, the vehicle can be driven slowly.
Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.

WIRING DIAGRAM


Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P2118 Throttle Actuator Control Motor Current Range / Performance


INSPECTION PROCEDURE

HINT:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction (CAMRY_ACV40 RM000000PDS01FX.html).
1.CHECK FUSE (ETCS FUSE)


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P2118 Throttle Actuator Control Motor Current Range / Performance

  1. Remove the ETCS fuse from the engine room R/B.

  1. Measure the resistance of the ETCS fuse.

    Standard resistance:
    Below 1 Ω

  1. Reinstall the ETCS fuse.



NG
REPLACE ETCS FUSE
OK


2.INSPECT ECM (+BM VOLTAGE)


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P2118 Throttle Actuator Control Motor Current Range / Performance

  1. Disconnect the ECM connector.

  1. Measure the voltage according to the value(s) in the table below.

    Standard voltage:
    RHD:
    Tester Connection
    		Specified Condition
    +BM (A24-3) - Body ground
    		9 to 14 V
    LHD:
    Tester Connection
    		Specified Condition
    +BM (A55-3) - Body ground
    		9 to 14 V

  1. Reconnect the ECM connector.



OK
CHECK FOR INTERMITTENT PROBLEMS
NG


3.CHECK HARNESS AND CONNECTOR (ECM - ETCS FUSE, ETCS FUSE - BATTERY)


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System. Dtc P2118 Throttle Actuator Control Motor Current Range / Performance

  1. Check the harness and connector between the ETCS fuse and ECM.

    1. Remove the ETCS fuse from the engine room R/B.

    2. Disconnect the A24 (RHD) or A55 (LHD) ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open):
      RHD:
      Tester Connection
      		Specified Condition
      Engine room R/B ETCS fuse terminal 2 - +BM (A24-3)
      		Below 1 Ω
      LHD:
      Tester Connection
      		Specified Condition
      Engine room R/B ETCS fuse terminal 2 - +BM (A55-3)
      		Below 1 Ω

      Standard resistance (Check for short):
      RHD:
      Tester Connection
      		Specified Condition
      Engine room R/B ETCS fuse terminal 2 or +BM (A24-3) - Body ground
      		10 kΩ or higher
      LHD:
      Tester Connection
      		Specified Condition
      Engine room R/B ETCS fuse terminal 2 or +BM (A55-3) - Body ground
      		10 kΩ or higher

    4. Reinstall the ETCS fuse.

    5. Reconnect the ECM connector.

  1. Check the harness and connector between the ETCS fuse and positive battery cable.

    1. Remove the ETCS fuse from the engine room R/B.

    2. Disconnect the negative battery terminal.

    3. Disconnect the positive battery terminal.

    4. Measure the resistance according to the value(s) in the table below.

      Standard resistance:
      Check for open:
      Tester Connection
      		Specified Condition
      Positive battery terminal - Engine room R/B ETCS fuse terminal 1
      		Below 1 Ω
      Check for short:
      Tester Connection
      		Specified Condition
      Positive battery terminal or Engine room R/B ETCS fuse terminal 1 - Body ground
      		10 kΩ or higher

    5. Reinstall the ETCS fuse.

    6. Reconnect the positive battery terminal.

    7. Reconnect the negative battery terminal.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (CAMRY_ACV40 RM0000022NT00OX.html)