Work Flow
DETAILS OF TROUBLE DIAGNOSIS FLOWCHART
COLLECT THE INFORMATION FROM THE CUSTOMER
It is also important to clarify customer concerns before starting the inspection. First of all, perform an interview utilizing Diagnostic Work Sheet and reproduce the symptom as well as fully understand it. Depending on the situations, drive the vehicle with the customer and check the symptom.
CAUTION:
Customers are not professionals. Never guess easily like “maybe the customer means that...,” or “maybe the customer mentions this symptom”.
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GO TO 2.
CHECK SYMPTOM
Reproduce the symptom that is indicated by the customer, based on the information from the customer obtained by interview. Also check that the symptom is not caused by fail-safe mode. Refer to Fail-Safe.
CAUTION:
When the symptom is caused by normal operation, fully inspect each portion and obtain the understanding of customer that the symptom is not caused by a malfunction.
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GO TO 3.
PERFORM SELF-DIAGNOSIS
With CONSULT
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Ignition switch OFF. (Auto ACC function OFF) to ON.
CAUTION:
Be sure wait of 10 seconds after ignition switch OFF (Auto ACC function OFF) or ON.
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Operate (push/pull) parking brake switch.
CAUTION:
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Set the electric shift selector in the P position.
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Depress the brake pedal.
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Perform self-diagnosis for “ABS”.
Is DTC detected?
YES>>Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.
NO>>GO TO 5.
REPAIR OR REPLACE ERROR-DETECTED PART
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Repair or replace error-detected parts.
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Reconnect part or connector after repairing or replacing.
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When DTC is detected, erase self-diagnostic result for “ABS”.
CAUTION:
Be sure wait of 10 seconds after ignition switch OFF or ON.
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GO TO 5.
IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS
Estimate error-detected system based on symptom diagnosis and perform inspection.
Can the error-detected system be identified?
YES>>GO TO 6.
NO>>Check harness and connectors based on the information obtained by interview. Refer to Intermittent Incident.
FINAL CHECK
With CONSULT
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Check the reference value for “ABS”. Refer to Reference Value.
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Perform self-diagnosis for “ABS”.
Is DTC detected?
YES-1>>"CRNT" is displayed: Check the DTC. Refer to DTC Index.
YES-2>>“PAST” is displayed: INSPECTION END (Erase the memory of self-diagnosis results.)
NO>>INSPECTION END
Diagnostic Work Sheet
DESCRIPTION
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In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
INTERVIEW SHEET SAMPLE
| Interview sheet | |||||
|---|---|---|---|---|---|
| Customer name | MR/MS | Registration number | Initial year registration | ||
| vehicle type | VIN | ||||
| Storage date | Engine | Mileage | km ( Mile) | ||
| Situation where malfunction is occurred | Malfunction category |
□ Unable to brake □ Unable to release □ Generates abnormal sound □ vehicle does not stop despite braking operation □ Parking brake continues breaking despite release operation □ Hooked at automatic release operation □ vehicle slides down at automatic release operation □ Electric parking brake warning lamp does not turns ON □ Electric parking brake warning lamp keep turns ON □ Electric parking brake warning lamp blinks □ Brake system warning lamp does not turn ON □ Brake system warning lamp keep turns ON □ Brake system warning lamp blink □ Master warning lamp turns ON □ A text displayed on combination meter |
|||
| Detailed symptom | |||||
| Detailed abnormal sound | |||||
| Electric shift selector position | □ P □ R □N □ D | ||||
| Seat belt operation | □ OFF □ ON | ||||
| Brake pedal status | □ Not depress □ Depress | ||||
| Parking brake status |
□ At release operation □ At braking operation □ During release □ During braking □ Continuously |
||||
| vehicle status | □ Ignition switch OFF □ Ignition switch ON | ||||
| vehicle running status |
□ At start with shift in D-range □ While driving with shift in D-range □ When stopped with shift in D-range □ At start with shift in R-range □ While driving with shift in R-range □ When stopped with shift in R-range □ When stopped with shift in N-range □ When stopped with shift in P-range □ Low speed (while driving) □ Normal speed (while driving) □ High speed (while driving) |
||||
| Road condition |
□ Steep downhill road □ Gentle downhill road □ Flat road □ Gentle uphill road □ Steep uphill road |
||||
| Number of occupants | □ 5 □ 4 □ 3 □ 2 □ 1 | ||||
| vehicle loading condition (quantity) | |||||
| Mechanical release history | |||||
| Inspection result | Self-diagnosis result | ||||
| 12V battery condition | □ Normal □ Abnormal ( ) □ Not confirmed | ||||
| Harness and connector condition | □ Normal □ Abnormal ( ) □ Not confirmed | ||||
| Brake caliper assembly condition | □ Normal □ Abnormal ( ) □ Not confirmed | ||||
| Rear brake pad condition | □ Normal □ Abnormal ( ) □ Not confirmed | ||||
| Rear disc rotor condition | □ Normal □ Abnormal ( ) □ Not confirmed | ||||
| Other condition | |||||
Other materials
Precautions
Precautions for Removing Battery Terminal
When disconnecting the 12V battery terminal, turn off the ACC power before disconnecting the 12V battery terminal, observing “How to disconnect 12V battery terminal” described below.
NOTE:
Some ECUs operate for a certain fixed time even after ignit ...
Seat Belt Warning (buzzer) Does Not Sound
Diagnosis Procedure
CHECK DTC OF AIR BAG DIAGNOSIS SENSOR UNIT
Check DTC in “Self Diagnosis Result” mode of “AIR BAG” using CONSULT.
Is DTC detected?
YES>>
Perform trouble diagnosis related to the detected DTC. Refer to DTC Index.
NO>>
GO TO 2.
CHECK DTC OF BCM
Check DTC in “ ...
Precautions
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger fo ...