Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: IGB Signal Circuit Short to Auxiliary Battery (P1CFA12)

DESCRIPTION

The hybrid vehicle control ECU monitors the IGB signal received from the certification ECU (smart key ECU assembly). When an error is detected in the IGB signal, this DTC is stored.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

P1CFA12

IGB Signal Circuit Short to Auxiliary Battery

An IGB signal from the hybrid vehicle control ECU is on when the ignition switch is off.

(1 trip detection logic)

  • Wire harness or connector
  • Hybrid vehicle control ECU
  • Certification ECU (smart key ECU assembly)

Does not come on

Master Warning:

Comes on

SAE Code:

P1CFC

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch to ON and turn the GTS on.
  6. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  7. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform driving pattern again.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

Click here

PROCEDURE

1.

CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

Click here

NG

CONNECT SECURELY

OK

2.

CHECK CONNECTOR CONNECTION CONDITION (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

(a) Check the connector connection condition of the certification ECU (smart key ECU assembly).

Click here

OK:

The connector is connected securely and there are no contact problems.

NG

CONNECT SECURELY

OK

3.

CHECK HARNESS AND CONNECTOR (IGB TERMINAL VOLTAGE)

(a) Turn the ignition switch off.

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

*a

Component with harness connected

(Hybrid Vehicle Control ECU)

-

-

Standard Voltage:

Tester Connection

Condition

Specified Condition

I249-5 (IGB) - Body ground

Ignition switch off

Below 1 V

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

4.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

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

*a

Component with harness connected

(Hybrid Vehicle Control ECU)

-

-

Standard Voltage:

Tester Connection

Condition

Specified Condition

I249-5 (IGB) - Body ground

Ignition switch off

Below 1 V

(c) Reconnect the certification ECU (smart key ECU assembly) connector.

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    READ NEXT:

     Motor Inverter Shutdown Performance Stuck Off (P1F689F)

    DESCRIPTION The hybrid vehicle control ECU detects malfunctions which prevent the generator (MG1) inverter, motor (MG2) inverter and rear motor (MGR) inverter shutdown circuit from shutting down the h

     Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Auxiliary Battery (P212012,...,P21382B)

    DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU calculates the accelerator pedal opening angle based on the output voltage of the main sensor (VPA) and sub sensor (VPA2) of the acce

     IG2 Signal Circuit Short to Auxiliary Battery (P253012)

    DESCRIPTION The hybrid vehicle control ECU compares the IGP signal to the IG control status signal sent from the certification ECU (smart key ECU assembly) to detect a stuck on malfunction of the IGP

    SEE MORE:

     Front Window Fogging

    DESCRIPTION If the windshield frequently fogs up even though the air conditioning system is operating, the following factors may be the cause. Symptom Factor Windshield frequently fogs up Compressor with pulley assembly malfunction Refrigerant volume (low) Cool

     Ignition Switch

    RemovalREMOVAL CAUTION / NOTICE / HINT Procedure Part Name Code 1 LOWER STEERING COLUMN COVER 45287 - - 2 IGNITION OR STARTER SWITCH ASSEMBLY 84450 - - - PROCEDURE 1. REMOVE LOWER STEERING COLUMN COVER

    © 2020-2024 Copyright www.tcorollacross.com