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:
Reassembly
1. INSTALL OVERDRIVE DIRECT CLUTCH O-RING
(a) Coat an O-ring with ATF, and install it to the direct
clutch drum.
NOTICE:
Make sure that the O-ring is not twisted or
pinched when it is installed.
2. INSTALL OVERDRIVE DIRECT CLUTCH DRUM SUBASSEMBLY
(a) Coat the direct clutch drum with A ...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch to the
radio receiver.
If there is an open in the circuit, the navigation system cannot be operated
using the steering pad switch.
If there is a short in the circuit, the resulting condition is the same as if ...
System Voltage
DTC P0560 System Voltage
MONITOR DESCRIPTION
The battery supplies electricity to the ECM even when the ignition switch is
off. This power allows the
ECM to store data such as DTC history, freeze frame data and fuel trim values.
If the battery voltage falls
below a minimum level, these memori ...
