Toyota Tacoma (2015-2018) Service Manual: Transmitter ID not Registered (C2171/71)
DESCRIPTION
The IDs of each tire pressure warning valve and transmitter are registered to the tire pressure warning ECU and receiver.
When the ECU detects that a transmitter ID code is not registered in the ECU, this DTC is stored.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
|---|---|---|---|---|
|
C2171/7 |
Transmitter ID not Registered |
Transmitter ID code is not registered. (When an ID code is unregistered for 3 minutes or more) |
Tire pressure warning ECU and receiver |
- |
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
- It is necessary to perform initialization (See page
.gif)
) after registration (See page
) of the transmitter IDs into the tire
pressure warning ECU and receiver if the ECU has been replaced.
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/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Registered ID 1 Code |
Registered ID1 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID1 displayed |
- |
|
Registered ID 2 Code |
Registered ID2 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID2 displayed |
- |
|
Registered ID 3 Code |
Registered ID3 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID3 displayed |
- |
|
Registered ID 4 Code |
Registered ID4 code/ min.: 0 max.: FFFFFFF*1 |
ID No. registered for transmitter ID4 displayed |
- |
HINT:
*1: Displayed only when the ID No. is not registered.
OK:
The registered transmitter ID codes are displayed on the Techstream.
| OK | .gif) |
TIRE PRESSURE WARNING ECU AND RECEIVER |
|
.gif)
|
2. |
PERFORM REGISTRATION (TRANSMITTER ID) |
(a) Perform registration (See page ).
|
|
3. |
PERFORM INITIALIZATION |
(a) Perform initialization (See page ).
|
|
4. |
CONFIRM TIRE INFLATION PRESSURE (DATA LIST) |
(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/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
ID 1 Tire Inflation Pressure |
ID1 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/ cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 |
|
ID 2 Tire Inflation Pressure |
ID2 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/ cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 |
|
ID 3 Tire Inflation Pressure |
ID3 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/ cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 |
|
ID 4 Tire Inflation Pressure |
ID4 tire inflation pressure/ min.: Absolute pressure (abs) / 0 kPa (0 kgf/cm2, 0 psi), Relative pressure (Gauge) / 0 kPa (0 kgf/cm2, 0 psi) max.: Absolute pressure (abs) / 480 kPa (4.9 kgf/cm2, 70 psi), Relative pressure (Gauge) / 380 kPa (3.9 kgf/ cm2, 55 psi) |
Actual tire inflation pressure |
If N/A is displayed, data has not been received.*1 |
HINT:
- *1: It may take a few minutes until the values are displayed.
- When an "ID Tire Inflation Pressure" value has not changed, reset the tire pressure to the appropriate specified value and rotate the tire 90 to 270 degrees. Then rapidly release the tire pressure and recheck the value.
|
Result |
Proceed to |
|---|---|
|
All tire pressure readings are equal to specified values. |
A |
|
Tire pressure values are not displayed. |
B |
| A | |
END |
| B | |
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is displayed during the DTC check, inspect the trouble area
for that code. For details of each code, refer to the relevant page listed under
...
Receiver Error (C2176/76)
DESCRIPTION
Tire pressure warning valve and transmitter signals are transmitted to the tire
pressure warning ECU and receiver in the vehicle as radio waves.
DTC No.
Detection ...
Other materials:
New Key cannot be Registered
DESCRIPTION
If an electrical key transmitter could not be newly registered, wave interference
or a malfunction of the certification ECU (smart key ECU assembly), electrical key
transmitter sub-assembly, steering lock ECU (steering lock actuator or UPR bracket
assembly) or electrical key and T ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE NO. 1 HEATER TO REGISTER DUCT
(a) Remove the 2 screws <F> and screw <D>.
(b) Disengage the 2 guides to remove the No. 1 heater to register duct.
2. REMOVE NO. 3 HEATER TO REGISTER DUCT
...
Inspection
INSPECTION
PROCEDURE
1. INSPECT FUEL PUMP
(a) Inspect the resistance of the fuel pump.
(1) Measure the resistance according to the value(s) in the table below.
Text in Illustration
*a
Component without harness connected
(Fuel Pump)
...
