Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM1000000026ZHT
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 -           ]
Title: PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for Knobless Radio and Display Receiver): HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]

HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the rear view monitor system.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
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2.

CUSTOMER PROBLEM ANALYSIS

(a) Ask the customer about the problems and the conditions at the time the malfunction occurred to make sure the problem symptom was not temporarily caused by radio waves in the surrounding environment.

HINT:

The rear view monitor display may be temporarily distorted due to radio waves around the vehicle.

Problem Symptom

Cause

Both of the following conditions are met:

  • The problem symptom indicates a rear view monitor display malfunction and the problem symptom cannot be reproduced.
  • DTC C1622 is output as "Hist" only.*

The display may be temporarily distorted when the vehicle is close to an object that transmits radio waves, such as a telecommunication tower, an airport or a truck equipped with a transceiver.
  • *: DTCs output as "Hist" will not be output again after DTCs are cleared.
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3.

INSPECT AUXILIARY BATTERY VOLTAGE

(a) Measure the auxiliary battery voltage with the ignition switch off.*1

(b) Measure the auxiliary battery voltage.*2

  • *1: for HV Model
  • *2: for Gasoline Model

Standard Voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.

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4.

CHECK NAVIGATION SYSTEM OR AUDIO AND VISUAL SYSTEM

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): HOW TO PROCEED WITH TROUBLESHOOTING

Result

Proceed to

audio and visual system are normal

A

Audio and visual system is abnormal

B
B

GO TO AUDIO AND VISUAL SYSTEM

A

5.

PROBLEM SYMPTOM CONFIRMATION

Result

Proceed to

Symptom does not occur

A

Symptom occurs

B
B

GO TO STEP 7

A

6.

SYMPTOM SIMULATION

(a) Refer to Symptom Simulation.

Click here 2019 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [06/2018 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING

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7.

CHECK IF SAME SYMPTOM APPEARS IN OTHER SYSTEM

(a) Refer to Audio and Visual System.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (for Knobless Radio and Display Receiver): PROBLEM SYMPTOMS TABLE

Result

Proceed to

Symptom does not appear

A

Symptom appears (w/o Navigation System)

B
B

GO TO AUDIO AND VISUAL SYSTEM

A

8.

PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for Knobless Radio and Display Receiver): PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault is not listed in Problem Symptoms Table

A

Fault is listed in Problem Symptoms Table

B
B

GO TO STEP 10

A

9.

PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

(a) Refer to Terminals of ECU.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; PARK ASSIST / MONITORING: REAR VIEW MONITOR SYSTEM (for Knobless Radio and Display Receiver): TERMINALS OF ECU

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10.

ADJUST, REPAIR OR REPLACE
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11.

CONFIRMATION TEST
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END