Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000001048A |
Model Year Start: 2017 |
Model: Sienna |
Prod Date Range: [08/2016 -
] |
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2017 - 2020 MY Sienna [08/2016 - ] |
HOW TO PROCEED WITH TROUBLESHOOTING
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CAUTION / NOTICE / HINT
HINT:
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Use these procedures to troubleshoot the power steering system.
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*: Use the Techstream.
PROCEDURE
1.
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VEHICLE BROUGHT TO WORKSHOP
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NEXT
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2.
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CUSTOMER PROBLEM ANALYSIS
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(a) Confirm problem symptoms
See page
NEXT
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3.
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INSPECT BATTERY VOLTAGE
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Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT
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4.
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CHECK DTC AND FREEZE FRAME DATA*
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HINT:
Refer to DTC Check / Clear.
See page
NEXT
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5.
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PROBLEM SYMPTOM CONFIRMATION
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NEXT
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6.
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CHECK CAN COMMUNICATION SYSTEM*
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(a) Refer to DTC output for the CAN communication system.
See page
Result
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Proceed to
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CAN system DTC is not output
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A
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CAN system DTC is output
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B
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HINT:
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When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.
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When communication to the power steering ECU is not established through the Techstream, inspect terminals CANH and CANL of the DLC3 and the power steering ECU, and the IG circuit of the power steering ECU.
B |
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GO TO CAN COMMUNICATION SYSTEM
See page
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A
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(a) Refer to DTC Check/Clear.
See page
Chassis > EMPS > Trouble Codes
HINT:
Refer to Diagnostic Trouble Code Chart when any DTCs are output.
See page
Result
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Proceed to
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DTCs are not output.
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A
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DTCs are output.
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B
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A
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8.
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PROBLEM SYMPTOMS TABLE
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(a) Refer to Problem Symptoms Table.
See page
Result
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Proceed to
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Fault is not listed in Problem Symptoms Table.
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A
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Fault is listed in Problem Symptoms Table.
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B
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A
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9.
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OVERALL ANALYSIS AND TROUBLESHOOTING*
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(a) Refer to Terminals of ECU.
See page
(b) Refer to Data List / Active Test.
See page
NEXT
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NEXT
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NEXT |
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END
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