Toyota 4Runner: Transmitter ID not Registered (C2171/71)
DESCRIPTION
The ID of each tire pressure warning valve and transmitter is registered to the tire pressure warning ECU.
When the ECU detects that a transmitter ID code is not registered in the ECU, this DTC is stored.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
C2171/71 |
A transmitter ID code is not registered (when an ID code is unregistered for 3 minutes or more). |
Tire pressure warning ECU |
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the Techstream and note them down before removal.
- It is necessary to perform registration of the transmitter IDs into
the tire pressure warning ECU after the ECU and/or the tire pressure warning
valve and transmitter has been replaced (See page
.gif)
).
PROCEDURE
|
1. |
CONFIRM REGISTRATION CONDITION (REGISTERED ID CODES) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monitor / Data List.
(f) Check the values by referring to the table below.
Tire Pressure Monitor|
Tester Display |
Measurement Item/Display |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Registered ID1 Code |
Registered ID1 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID1 displayed |
- |
|
Registered ID2 Code |
Registered ID2 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID2 displayed |
- |
|
Registered ID3 Code |
Registered ID3 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID3 displayed |
- |
|
Registered ID4 Code |
Registered ID4 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID4 displayed |
- |
|
Registered ID5 Code*2 |
Registered ID5 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID5 displayed |
- |
HINT:
- *1: Displayed only when the ID No. is not registered.
- *2: w/ Spare Tire Pressure Warning Valve and Transmitter
|
Result |
Proceed to |
|---|---|
|
1 or more transmitter ID codes are not registered |
A |
|
All transmitter ID codes are registered |
B |
| B | .gif) |
GO TO STEP 3 |
|
.gif)
|
2. |
PERFORM REGISTRATION (TRANSMITTER ID) |
(a) Register the transmitter IDs for all the wheels (See page
).
|
|
3. |
CONFIRM TIRE INFLATION PRESSURE (DATA LIST) |
| A | |
END |
| B | |
REPLACE TIRE PRESSURE WARNING ECU |
Transmitter ID not Received in Main Mode (C2126/26)
DESCRIPTION
After all IDs are registered, DTC C2126/26 is stored in the tire pressure warning
ECU and the tire pressure warning light blinks for 1 minute and then comes on.
When the tire pressure ...
Engine Speed Signal Error (Test Mode DTC) (C2194/94)
DESCRIPTION
The tire pressure warning ECU receives an engine speed signal from the ECM. This
DTC is stored upon entering test mode and cleared when an engine speed signal of
1000 rpm is detected ...
Other materials about Toyota 4Runner:
How To Proceed With Troubleshooting
PROCEDURE
1.
CHECK TIRE AND WHEEL SYSTEM
DIAGNOSIS OF IRREGULAR TIRE WEAR
GO TO STEP 9
DIAGNOSIS OF TIRE VIBRATION
2.
...
Power Supply Drive Circuit (C1257)
DESCRIPTION
The motor relay (semiconductor relay) is built into the master cylinder solenoid
and drives the pump motor based on a signal from the skid control ECU.
DTC Code
DTC Detection Condition
Trouble Area
...
0.0065