CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the wiper and washer system.
PROCEDURE |
1. | VEHICLE BROUGHT TO WORKSHOP |
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| 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:
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What |
Vehicle model, system name |
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When |
Date, time, occurrence frequency |
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Where |
Road conditions |
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Under what conditions? |
Driving conditions, weather conditions |
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How did it happen? |
Problem symptoms |
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| 3. |
READ OUT AND SAVE OPERATION HISTORY |
NOTICE:
- If the vehicle or vehicle controls are operated (for example, during
initial inspection when the vehicle is brought in for repair) before
operation history has been read out and saved, the operation history
information could be lost.
- The function "Read operation history" uses the current system time
setting inside the Techstream and the time counter inside the
controlling ECU to calculate the timings shown in the operation history.
For this reason, before reading out the operation history, first make
sure that the Techstream system clock is accurately set to the current
time.
(a) Read out and save operation history using the Techstream. Click here
 Body Electrical > Wiper > Utility
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Tester Display | | Operation History |
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(a) Measure the battery voltage with engine switch off.
Standard Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays. (c)
Check the connector connections and terminals to make sure that there
are no abnormalities such as loose connections, deformation, etc.
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| 5. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs. Click here
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Result | Proceed to | |
CAN DTCs are not output |
A | | CAN DTCs are output |
B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
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A | |
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(a) Check for DTCs. Body Electrical > Wiper > Trouble Codes Body Electrical > Main Body > Trouble Codes
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Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART |
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A | |
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| 7. |
PROBLEM SYMPTOMS TABLE | (a) Refer to Problem Symptoms Table.
Click here
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Result | Proceed to | |
Fault is not listed in Problem Symptoms Table |
A | | Fault is listed in Problem Symptoms Table |
B |
| B |
| GO TO PROBLEM SYMPTOMS TABLE |
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A | |
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| 8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check. Click here
(b) Data List / Active Test Click here
(c) Terminals of ECU Click here
(d) Fail-safe Chart Click here
(e) Inspection (f) On-vehicle inspection
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| 9. |
ADJUST, REPAIR OR REPLACE |
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| NEXT |
| END | |
