Toyota Sienna Service Manual: Terminals of ECU
1. CHECK DRIVER SIDE J/B ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
- Disconnect the 1C, 1J, 1L, 1K, 1P, B6, B7 and B9 J/ B connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
Standard
HINT:
- If the result is not as specified, there may be a malfunction on the wire harness side.
- *1: w/o Power back door
- Reconnect the J/B and ECU connectors and measure the voltage according to the value(s) in the table below.
Standard voltage
HINT:
- *1: w/o Power Back Door
- Use an oscilloscope to check the output voltages of terminals LSWD, LSWP, LSWL and LSWR.
- If the result is not as specified, the J/B (body ECU) may have a malfunction.
2. CHECK POWER BACK DOOR ECU (w/ Power back door system)
- Disconnect the P13 and P14 ECU connectors.
- Measure the voltage and resistance according to the value(s) in the table below.
Standard
HINT: If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the ECU connectors and measure the voltage according to the value(s) in the table below.
Standard voltage
HINT: If the result is not as specified, the ECU may have a malfunction.
Problem symptoms table
HINT:
Inspect the fuse and relay before investigating the suspected
areas shown in the table below.
POWER DOOR LOCK CONTROL SYSTEM
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Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format.
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Other materials:
System description
1. GENERAL DESCRIPTION
The power seat control system is equipped with the
following function:
The front seats are equipped with electric
adjuster slide, reclining, lifter, front vertical and
lumbar support adjustment functions.
The power seat control system (w ...
Mass or Volume Air Flow Circuit Range / Performance Problem
DESCRIPTION
Refer to DTC P0100 (See page ES-116).
MONITOR DESCRIPTION
The MAF meter is a sensor that measures the amount of air flowing through the
throttle valve. The ECM
uses this information to determine the fuel injection time and to provide an
appropriate air-fuel ratio.
Insi ...
Perform zero point calibration of yaw rate and deceleration sensor (when
using sst check wire)
NOTICE:
While obtaining the zero point, do not vibrate the
vehicle by tilting, moving or shaking it and keep it
in a stationary condition. (Do not turn the ignition
switch to the ON position.)
Be sure to do this on a level surface (with an
inclination of less than 1 %).
(a) Proc ...
