RX400h · Service Manual HYBRID SYSTEM

P2122-104

Diagnostic trouble codes

DESCRIPTION

Refer to the description for DTC P2120-111. (Click here)
DTCNo.
 INF Code
 DTC Detection Condition
 Trouble Area
P2122
 104
 Open or GND short in main sensor circuit
  1. Wire harness or connector
  2. Accelerator pedal rod assembly
  3. HV control ECU
P2123
 105
 +B short in main sensor circuit
  1. Wire harness or connector
  2. Accelerator pedal rod assembly
  3. HV control ECU
P2127
 107
 Open or GND short in sub sensor circuit
  1. Wire harness or connector
  2. Accelerator pedal rod assembly
  3. HV control ECU
P2128
 108
 +B short in sub sensor circuit
  1. Wire harness or connector
  2. Accelerator pedal rod assembly
  3. HV control ECU

WIRING DIAGRAM

Refer to the wiring diagram for DTC P2120-111. (Click here)

INSPECTION PROCEDURE


1. READ VALUE OF INTELLIGENT TESTER (ACCEL POS #1 AND #2)

  1. Connect the intelligent tester to the DLC3.

  1. FI07052
    Turn the ignition switch to the ON position.

  1. Select the following menu items: Powertrain / Hybrid Control / Data List / Accel Pos #1 and #2.

  1. Read the voltage for the accelerator pedal position sensor data.

    Result:
    Accelerator Pedal
    		 Accel Pos #1
    		 Accel Pos #2
    Released
    		 0.4 to 1.4 V
    		 1.0 to 2.2 V
    Depressed
    		 3.1 to 4.6 V
    		 3.9 to 5.0 V



OK
CHECK FOR INTERMITTENT PROBLEMS
NG


2. INSPECT HYBRID VEHICLE CONTROL ECU

  1. A103658E42
    Disconnect the A15 accelerator pedal position sensor connector.

  1. Turn the ignition switch to the ON position.

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

    Standard Voltage:
    Tester Connection
    		 Specified Condition
    VCP1 (H31-24) - EP1 (H31-33)
    		 4.5 to 5.5 V
    VCP2 (H31-31) - EP2 (H31-32)
    		 4.5 to 5.5 V



NG
REPLACE HYBRID VEHICLE CONTROL ECU
OK


3. INSPECT HYBRID VEHICLE CONTROL ECU

  1. A103658E43
    Connect the accelerator pedal position sensor connector.

  1. Turn the ignition switch to the ON position.

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

    Standard Voltage:
    Pedal Position
    		 VPA (H31-25) - EP1 (H31-33)
    		 VPA2 (H31-26) - EP2 (H31-32)
    Released
    		 0.4 to 1.4 V
    		 1.0 to 2.2 V
    Depressed
    		 3.1 to 4.6 V
    		 3.9 to 5.0 V



OK
REPLACE HYBRID VEHICLE CONTROL ECU
NG


4. CHECK HARNESS AND CONNECTOR (HV CONTROL ECU - ACCELERATOR PEDAL POSITION SENSOR)

  1. A109414E02
    Turn the ignition switch OFF.

  1. Disconnect the H31 HV control ECU connector.

  1. Disconnect the A15 accelerator pedal position sensor connector.

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

    Standard Voltage:
    Tester Connection
    		 Specified Condition
    VPA (H31-25) - Body ground
    		 Below 1 V
    VCP1 (H31-24) - Body ground
    		 Below 1 V
    EP1 (H31-33) - Body ground
    		 Below 1 V
    VPA2 (H31-26) - Body ground
    		 Below 1 V
    VCP2 (H31-31) - Body ground
    		 Below 1 V
    EP2 (H31-32) - Body ground
    		 Below 1 V

  1. Turn the ignition switch OFF.

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

    Standard Resistance (Check for open):
    Tester Connection
    		 Specified Condition
    VPA (H31-25) - VPA1 (A15-6)
    		 Below 1 Ω
    VCP1 (H31-24) - VCP1 (A15-4)
    		 Below 1 Ω
    EP1 (H31-33) - EP1 (A15-5)
    		 Below 1 Ω
    VPA2 (H31-26) - VPA2 (A15-1)
    		 Below 1 Ω
    VCP2 (H31-31) - VCP2 (A15-1)
    		 Below 1 Ω
    EP2 (H31-32) - EP2 (A15-2)
    		 Below 1 Ω

    Standard Resistance (Check for short):
    Tester Connection
    		 Specified Condition
    VPA (H31-25) or VPA1 (A15-6) - Body ground
    		 10 kΩ or higher
    VCP1 (H31-24) or VCP1 (A15-4) - Body ground
    		 10 kΩ or higher
    EP1 (H31-33) or EP1 (A15-5) - Body ground
    		 10 kΩ or higher
    VPA2 (H31-26) or VPA2 (A15-1) - Body ground
    		 10 kΩ or higher
    VCP2 (H31-31) or VCP2 (A15-1) - Body ground
    		 10 kΩ or higher
    EP2 (H31-32) or EP2 (A15-2) - Body ground
    		 10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ACCELERATOR PEDAL ROD ASSEMBLY


← P2120-111P2520-782 →