Toyota CH-R Service Manual: How To Proceed With Troubleshooting

Toyota CH-R Service Manual / 3zr-fae Battery / Charging / Charging System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

*: Use the Techstream.

PROCEDURE

1.

VEHICLE BROUGHT TO WORKSHOP
NEXT

2.

CUSTOMER PROBLEM ANALYSIS

HINT:

  • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
  • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
  • The following 5 items are important points for problem analysis:

    What

    Vehicle model, system name

    When

    Date, time, occurrence frequency

    Where

    Road conditions

    Under what conditions?

    Running conditions, driving conditions, weather conditions

    How did it happen?

    Problem symptoms
NEXT

3.

INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

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

NEXT

4.

INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Check if CAN communication DTCs are output.

Click here

Result

Proceed to

CAN communication DTCs are not output.

A

CAN communication DTCs are output.

B
B

GO TO CAN COMMUNICATION SYSTEM

A

5.

CHECK FOR DTC*

HINT:

Refer to DTC Check / Clear.

Click here

Result

Proceed to

DTCs are not output.

A

DTCs are output.

B
B

GO TO DTC CHART

A

6.

REFER TO PROBLEM SYMPTOMS TABLE

HINT:

Refer to Problem Symptoms Table.

Click here

Result

Proceed to

Malfunctioning parts are not confirmed.

A

Malfunctioning parts are confirmed.

B
B

GO TO STEP 12

A

7.

OVERALL ANALYSIS AND TROUBLESHOOTING*

HINT:

Refer to Data List / Active Test.

Click here

Result

Proceed to

Malfunctioning parts are not confirmed.

A

Malfunctioning parts are confirmed.

B
B

GO TO STEP 12

A

8.

CHECK ECM CIRCUIT

HINT:

Refer to Terminals of ECM.

Click here

NG

GO TO STEP 12

OK

9.

CHECK FOR INTERMITTENT PROBLEMS

HINT:

Refer to Symptom Simulation.

Click here

NEXT

10.

CONDUCT PARTS INSPECTION
NEXT

11.

IDENTIFY PROBLEM
NEXT

12.

ADJUST AND/OR REPAIR
NEXT

13.

CONDUCT CONFIRMATION TEST
NEXT

END
    System Diagram
    SYSTEM DIAGRAM ...

    Problem Symptoms Table
    PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

    Other materials:

    Toyota CH-R Service Manual > Can Communication System: Check Bus 1 Line for Short to GND
    DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 23 (CA1H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 8 (CA1L) of the central gateway ECU (network gateway ECU) and ...

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