Toyota 4Runner: Side Auto Step ECU Power Source Circuit
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP CONTROLLER ECU - BODY GROUND) |
(a) Disconnect the A41 side auto step controller ECU assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A41-1 (GND) - Body ground |
Always |
Below 1 Ω |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A41-4 (B) - Body ground |
Always |
11 to 14 V |
| A | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| B | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Short to GND in Motor LH Circuit (21,23)
DESCRIPTION
When there is a short to GND in the side auto step motor circuit, the side auto
step controller ECU assembly does not operate the automatic running board.
DTC No.
...
Side Auto Step Switch Circuit
DESCRIPTION
The side auto step controller ECU assembly receives the door open/closed signal
from each door courtesy light switch via the side auto step switch assembly.
WIRING DIAGRAM
CAUTION / ...
Other materials about Toyota 4Runner:
Tire Pressure Warning Ecu
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL TIRE PRESSURE WARNING ECU
(a) Install the tire pressure warning ECU with the bolt.
Torque:
5.5 N·m {56 kgf·cm, 49 in·lbf}
(b) Connect the connector.
2. INSTA ...
Electronic Circuit Inspection Procedure
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. 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 ...
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