Toyota 4Runner: Hall Effect Sensor LH (43,44)
DESCRIPTION
When the automatic running board is operating and the current in the side auto step motor is within standard parameters, the side auto step controller ECU assembly halts the operation of the automatic running board if it does not receive a side auto step motor hall sensor signal.
|
DTC No. |
Detection Condition |
Trouble Area |
|---|---|---|
|
43 |
The side auto step motor LH current is normal and there is no side auto step motor assembly LH hall sensor signal. |
|
|
44 |
The side auto step motor RH current is normal and there is no side auto step motor assembly RH hall sensor signal. |
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (SIDE AUTO STEP MOTOR - SIDE AUTO STEP CONTROLLER ECU) |
(a) Disconnect the O25*1 or N23*2 side auto step motor assembly connector.
- *1: for LH
- *2: for RH
(b) Disconnect the A41 side auto step controller ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O25-1 (-1) - A41-5 (SSR-) |
Always |
Below 1 Ω |
|
O25-2 (SSR1) - A41-10 (SSR1) |
Always |
Below 1 Ω |
|
O25-3 (+1) - A41-14 (SSR+) |
Always |
Below 1 Ω |
|
A41-10 (SSR1) - Body ground |
Always |
10 kΩ or higher |
for RH
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
N23-1 (-2) - A41-5 (SSR-) |
Always |
Below 1 Ω |
|
N23-2 (SSR2) - A41-9 (SSR2) |
Always |
Below 1 Ω |
|
N23-3 (+2) - A41-14 (SSR+) |
Always |
Below 1 Ω |
|
A41-9 (SSR2) - Body ground |
Always |
10 kΩ or higher |
| OK | .gif) |
REPLACE SIDE AUTO STEP MOTOR ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
ECU Circuit (61)
DESCRIPTION
When the internal circuit of the side auto step controller ECU assembly malfunctions,
the side auto step controller ECU assembly halts the operation of the system.
DTC No.
...
Side Auto Step LH Stowing Timeout (51-56)
DESCRIPTION
When fully deploying or stowing the automatic running board takes more than 4
seconds, or when the side auto step motor hall sensor pulse signal exceeds the maximum
pulse count, the s ...
Other materials about Toyota 4Runner:
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-)
battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems ne ...
Personal Light(for Front Door)
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY
(a) Apply battery voltage to the connector and check the LED illumination.
OK:
Measurement ...
0.0068