| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000ZMUU |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): HOW TO PROCEED WITH TROUBLESHOOTING; 2017 - 2020 MY Sienna [08/2016 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the engine immobiliser system.
*: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
(a) Interview the customer to confirm the trouble.
Click here
![2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
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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.
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4. |
CRANK ENGINE FOR MORE THAN 10 SECONDS |
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5. |
CHECK FOR DTCS (ENGINE IMMOBILISER SYSTEM)* |
(a) Check for DTCs and note any codes that are output.
(b) Clear the DTCs.
Click here
(c) Recheck for DTCs. Based on the DTCs output above, try to duplicate the engine immobiliser system DTC by simulating the symptoms indicated by the DTCs.
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Result |
Proceed to |
|---|---|
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No DTCs are output |
A |
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Engine immobiliser system DTC is output |
B |
| B |
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6. |
CHECK FOR DTCS (SFI SYSTEM)* |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
HINT:
The DTCs for the engine immobiliser system are specified below. If other DTCs are output, check the DTC chart for the SFI system.
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Result |
Proceed to |
|---|---|
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No DTCs are output |
A |
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Engine immobiliser system DTC is output (DTC B279986, B279A12 or B279C95) |
B |
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SFI system DTC is output (except DTC B279986, B279A12 and B279C95) |
C |
| B |
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| C |
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GO TO SFI SYSTEM
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7. |
READ VALUE USING TECHSTREAM* |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Immobiliser / Data List.
(e) Read the Data List according to the display on the Techstream.
Immobiliser
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Key SW |
Unlock warning switch signal/ON or OFF |
ON: Key in ignition key cylinder OFF: No key in ignition key cylinder |
- |
OK:
On the Techstream screen, the item changes between ON and OFF according to the chart above.
| NG |
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8. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
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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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9. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Data List / Active Test
Click here
(b) Terminals of ECU
Click here
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10. |
REPAIR OR REPLACE |
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11. |
CONFIRMATION TEST |
| NEXT |
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END |
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