Toyota Sienna Service Manual: How to proceed with troubleshooting
HINT:
- Use this procedure to troubleshoot the theft deterrent system.
- The intelligent tester should be used in step 2.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
- Interview the customer to confirm the trouble
3 INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)
- Use the intelligent tester to check for normal function of the multiplex communication system.
- (ECU unconnected, communication line malfunctioning) Without code output, proceed to A.
- (ECU unconnected, communication line malfunctioning) With code output, proceed to B.
4 SYMPTOM SIMULATION
5 PROBLEM SYMPTOMS TABLE
- If the fault is not listed on the problem symptoms table, proceed to A.
- If the fault is listed on the problem symptoms table, proceed to B.
6 PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
- Terminals of ECU
- System description
7 ADJUST, REPAIR OR REPLACE
8 CONFIRMATION TEST
END
System description
1. OUTLINE OF THEFT DETERRENT SYSTEM
When the theft deterrent system detects that the
vehicle is being tampered with, the system sets off
the alarm, causing the horns to sound and the li ...
Customize parameters
HINT:
The following items can be customized.
NOTICE:
After confirming whether the items requested by the
customer are applicable or not for customization,
perform customizing operation ...
Other materials:
Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION: Wait for 90 seconds after disconnecting the cable
to prevent the airbag working.
2. REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSEMBLY
Disengage the 4 clips and remove the instrument
cluster finish panel sub-assembly.
...
Disassembly
1. Remove repair service starter kit
(a) Remove the nut and disconnect the lead wire from
the repair service starter kit.
(b) Remove the 2 screws which are used to secure the
repair service starter kit to the repair service starter
kit.
(c) Remove the repair service starter kit.
( ...
Back Door Closer does not Operate
DESCRIPTION
The power back door ECU controls the back door closer system. In response to
the signals output from
the switches related to the back door lock, the back door latch activates the
closer motor.
HINT:
The back door closer system operates regardless of whether the power back door
...
