Toyota Sienna Service Manual: Circuit inspection
A description of the main areas of each circuit inspection is shown in the table below.
| Item | Description |
| Circuit Description | The major role, operation of the circuit and its component parts are explained. |
| Diagnostic Trouble Code No. and Detection item | Indicates the diagnostic trouble codes, diagnostic trouble code settings and suspected areas for a problem |
| Wiring diagram | This shows a wiring diagram of the circuit.
Use this diagram together with ELECTRICAL WIRING DIAGRAM to thoroughly understand the circuit. Wire colors are indicated by an alphabetical code. B = Black, L = Blue, R = Red, BR = Brown, LG = Light Green, V = Violet, G = Green, O = Orange, W = White, GR = Gray, P = Pink, Y = Yellow, SB = Sky Blue The first letter indicates the basic wire color and the second letter indicates the color of the stripe. |
| Inspection Procedures | Use the inspection procedures to determine if the circuit is normal or abnormal. If abnormal, use the inspection procedures to determine whether the problem is located in the sensors, actuators, wire harnesses or ECU. |
| Indicates the condition of the connector of the ECU during the check | Connector being checked is connected.
Connections of tester are indicated by (+) or (-) after the terminal name. Connector being checked is disconnected. The inspections between a connector and body ground, information about the body ground is not shown in the illustration. |
Problem symptoms table
When a "Normal" code is output during a DTC check but
the problem still occurs, use the Problem Symptoms
Table. The suspected areas (circuits or parts) for each
problem symptoms are in th ...
Terms
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Other materials:
Installation
1. INSTALL INSTRUMENT PANEL SAFETY PAD SUBASSEMBLY
Using a torque wrench, install the bolt <B>.
Torque: 20 N*m (204 kgf*cm, 14 ft.*lbf)
2. INSTALL SHIFT LEVER ASSEMBLY
Using a torque wrench, install the 4 bolts.
Torque: 21 N*m (214 kgf*cm, 12.6 ft.*lbf)
3. ...
Push Switch / Key Unlock Warning Switch Malfunction
DTC B2780 Push Switch / Key Unlock Warning Switch Malfunction
DESCRIPTION
This DTC will be output if the transponder key ECU does not detect that the
unlock warning switch is on
even when the ignition switch is on (Under the normal conditions, the unlock
warning switch is on when
the ignitio ...
Gateway ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Gateway ECU
Communication Stop
Mode
"Gateway" is not displayed on the "Communication
Bus Check" screen of the intelligent tester
Applies to "Gateway ECU Communication ...
