Toyota Sienna Service Manual: Terminals of ecm
1. Ecm
Hint: each ecm terminal's standard voltage is shown in the table below.
In the table, first follow the information under "condition".
Look under "symbols (terminal no.)" For the terminals to inspected. The standard voltage between the terminals is shown under "specific condition".
Use the illustration above as a reference for the ecm terminals.
(a) Waveform 1
Reference: 
(b) Waveform 2
Reference: 
(c) Waveform 3
Reference: 
(d) Waveform 4
Reference: 
(e) Waveform 5
Reference: 
(f) Waveform 6
Reference: 
(g) Waveform 7
Reference:
(h) Waveform 8
Reference: 
Problem symptoms table
HINT:
If a normal code is displayed during the diagnostic trouble
code check although the trouble still occurs, check the
electrical circuits for each symptom in the order given in
the chart ...
Diagnosis system
1. DESCRIPTION
(a) When troubleshooting OBD II vehicles, the only
difference from the usual troubleshooting procedure
is to connect an OBD II scan tool complying with
SAE J1987 or a intelligen ...
Other materials:
Pressure Control Solenoid "A" Electrical (Shift
Solenoid Valve SL1)
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF"
operation of the shift solenoid
valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or
short circuit occurs in
either of the shift solenoid valves, the ECM cont ...
Inspection
1. Inspect starter assembly
NOTICE:
These tests must be performed within 3 to 5 seconds
to avoid burning out the coil.
(a) Perform the pull-in test.
(1) Disconnect the lead wire from terminal C.
(2) Connect the battery to the magnetic switch as
shown in the illustratio ...
Diagnosis Circuit
DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
DTCs are displayed by blinking the SRS warning light.
HINT:
When each warning light stays blinking, a ground short in the
wiring of terminal TC of the DLC3 or an
internal ground short in each ECU is ...
