CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the headup display system.
- *: Use the Techstream.
PROCEDURE |
1. | VEHICLE BROUGHT TO WORKSHOP |
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NEXT |
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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. |
INSPECT AUXILIARY BATTERY VOLTAGE | (a) Measure the auxiliary battery voltage with the power switch off.
Standard Voltage: 11 to 14 V If the voltage is below 11 V, recharge or replace the auxiliary 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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| 4. |
CHECK 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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| 5. |
CHECK FOR DTC* (HEADUP DISPLAY SYSTEM) |
(a) Check for DTCs. Body Electrical > Head Up Display > 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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| 6. |
PROBLEM SYMPTOM CONFIRMATION |
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| 8. |
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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| 9. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU. Click here
(b) Data List / Active Test. Click here
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| 11. |
ADJUST, REPAIR OR REPLACE |
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| NEXT |
| END | |
