Toyota Sienna Service Manual: Check for open circuit
(a) For an open circuit in the wire harness in Fig. 1, the resistance or voltage, as described below.
(b) Check the resistance.
Check the resistance
Standard resistance (Fig. 2)
HINT:
Measure the resistance while lightly shaking the wire harness vertically and horizontally. If the results match the examples above, an open circuit exists between terminal 1 of connector A and terminal 1 of connector C.
(2) Disconnect connector B and measure the resistance between the terminals of the connectors.
Standard resistance (Fig. 3)
If the results match the examples above, an open circuit exists between terminal 1 of connector B2 and terminal 1 of connector C.
(c) Check the voltage.
Check the voltage
(1) In a circuit in which voltage is applied to the ECU connector terminal, an open circuit can be checked by conducting a voltage check.
With each connector still connected, measure the voltage between the body ground and these terminals (in this order): 1) terminal 1 of connector A, 2) terminal 1 of connector B, and 3) terminal 1 of connector C.
Standard voltage (Fig. 4)
If the results match the examples above, an open circuit exists in the wire harness between terminal 1 of connector B and terminal 1 of connector C.
Basic inspection
(a) WHEN MEASURING RESISTANCE OF
ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance
measurements should be made at an ambient
temperature of 20°C (68°F). Resistance
measurements may b ...
Check for short circuit
(a) If the wire harness is ground shorted (Fig. 5), locate the section by
conducting a resistance check with the body ground (below).
(b) Check the resistance with the body ground.
...
Other materials:
Operation check
NOTICE: Inspection should be started after conforming that
the items listed in the "CUSTOMIZE PARAMETER" for the power back door system
have defaulted to the initial settings
1. CHECK OPENING OPERATION
Conditions necessary for the power back door to
open:
Power back d ...
Open in Driver Side Squib 2nd Step Circuit
DTC B1181/18 Open in Driver Side Squib 2nd Step Circuit
DESCRIPTION
The driver side squib 2nd step circuit consists of the center airbag sensor
assembly, the spiral cable and
the steering pad.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1181/18 is reco ...
Installation
1. INSTALL AIR FUEL RATIO SENSOR (for Bank 2
Sensor 1)
(a) Using SST, install the sensor to the exhaust
manifold LH.
SST 09224-00010
Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use
with SST
44 N*m (449 kgf*cm, 32 ft.*lbf) for use
without SST
HINT:
Use a torque wrench with a fulcrum ...
