| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000WP8A |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2016 - 2020 MY Sienna [12/2015 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the air conditioning system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
INSPECT BATTERY VOLTAGE |
(a) Inspect 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.
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3. |
CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the LIN communication system is functioning normally.
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Result |
Proceed to |
|---|---|
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LIN DTC is not output |
A |
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LIN DTC is output |
B |
| B |
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4. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
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Result |
Proceed to |
|---|---|
|
CAN DTC is not output |
A |
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CAN DTC is output |
B |
| B |
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GO TO CAN COMMUNICATION SYSTEM
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5. |
CHECK FOR DTC* |
(a) Check for DTCs and note any code that is output.
(b) Clear the DTCs.
(c) Recheck for DTCs. Based on the DTCs output above, try to force the air conditioning system to output DTCs by simulating the conditions indicated by the DTC.
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Result |
Proceed to |
|---|---|
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DTC is not output |
A |
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DTC is output |
B |
| B |
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GO TO DIAGNOSTIC TROUBLE CODE CHART
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6. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
![2016 MY Sienna [12/2015 - 08/2016]; HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)
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Result |
Proceed to |
|---|---|
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Fault is not listed in Problem Symptoms Table |
A |
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Fault is listed in Problem Symptoms Table |
B |
| B |
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7. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Panel diagnosis (indicator check, sensor check)
Click here
(b) Panel diagnosis (sensor check)
Click here
(c) Data List / Active Test
Click here
(d) Terminals of ECU
Click here
(e) On-vehicle Inspection
(f) Inspection
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8. |
ADJUST, REPAIR OR REPLACE |
| NEXT |
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END |
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