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:
1-2 Shift (1-2 Shift Valve) (P0781)
DESCRIPTION
The 1-2 shift valve performs shifting to 1st gear and other gears.
DTC Code
DTC Detection Condition
Trouble Area
P0781
Gear required by the ECM does not match the actual gear when drivi ...
Disassembly
DISASSEMBLY
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
2. REMOVE DOOR PULL HANDLE
(a) Using moulding rem ...
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