Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Hybrid/EV Powertrain Control Module "A" Unexpected Operation (P0A1D94)

Toyota Corolla Cross (2022-2024) Service Manual / ADAS & AD / Advanced Driver Assistance System / Front Camera System / Hybrid/EV Powertrain Control Module "A" Unexpected Operation (P0A1D94)

DESCRIPTION

Forward recognition camera receives vehicle specification information from the hybrid vehicle control ECU via CAN communication line. When the vehicle specification information sent from the hybrid vehicle control ECU is abnormal, the forward recognition camera stores DTC P0A1D94.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

P0A1D94

Hybrid/EV Powertrain Control Module "A" Unexpected Operation

When the forward recognition camera receives a cruise control switch input circuit malfunction signal sent from hybrid vehicle control ECU

  • Hybrid control system
  • Forward recognition camera

Front Recognition Camera

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the forward recognition camera, always replace it with a new one. If a forward recognition camera which was installed to another vehicle is used, the information stored in the forward recognition camera will not match the information from the vehicle and a DTC may be stored.
  • When the forward recognition camera has been replaced with a new one, make sure to clear all stored vehicle control history of each system and the forward recognition camera beam axis alignment data.

    HINT:

    Forward recognition camera beam axis alignment can be performed by using "One Time Recognition", "Driving Adjustment" or "Camera Axis Adjustment Value Write".

    One Time Recognition: Click here

    Driving Adjustment: Click here

    Camera Axis Adjustment Value Write: Click here

  • If the forward recognition camera has been replaced with a new one, make sure to perform Software Version Confirmation.

    Click here

PROCEDURE

1.

CHECK FOR DTC (Hybrid Control)

(a) Check the DTCs.

Powertrain > Hybrid Control > Trouble Codes

Result

Proceed to

Hybrid control system DTCs are not output

A

Hybrid control system DTCs are output

B

A

REPLACE FORWARD RECOGNITION CAMERA

B

GO TO HYBRID CONTROL SYSTEM

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