Toyota 4Runner: Receiver Error (C2176/76)
DESCRIPTION
The signals are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C2176/76 |
A malfunction in the tire pressure warning ECU internal circuit. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the tire pressure warning ECU, read the IDs stored in the old ECU using the Techstream and write 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. |
CHECK HARNESS AND CONNECTOR (ECU - RECEIVER) |
(a) Disconnect the F7 ECU connector.
(b) Disconnect the V3 receiver connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F7-12 (RDA) - V3-1 (RDA) |
Always |
Below 1 Ω |
|
F7-11 (GND2) - V3-4 (GND) |
Always |
Below 1 Ω |
|
F7-6 (RF5V) - V3-5 (+5V) |
Always |
Below 1 Ω |
|
F7-12 (RDA) or V3-1 (RDA) - Body ground |
Always |
10 kΩ or higher |
|
F7-11 (GND2) or V3-4 (GND) - Body ground |
Always |
10 kΩ or higher |
|
F7-6 (RF5V) or V3-5 (+5V) - Body ground |
Always |
10 kΩ or higher |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
CHECK TIRE PRESSURE WARNING ECU |
|
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK | |
REPLACE TIRE PRESSURE WARNING ANTENNA AND RECEIVER |
| NG | |
REPLACE TIRE PRESSURE WARNING ECU |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Tire pressure warning system
DTC Code
Detection Item
See page
C2111/11
Transmitter ID1 Operation Stop
...
Vehicle Speed or Engine Speed Signal Malfunction (C2173/73)
DESCRIPTION
The tire pressure warning ECU receives a vehicle speed signal from the combination
meter and an engine speed signal from the ECM. The tire pressure warning ECU uses
these signals to s ...
Other materials about Toyota 4Runner:
Data List / Active Test
DATA LIST / ACTIVE TEST
1. ACTIVE TEST
HINT:
Using the Techstream to perform Active Tests allows relays, VSVs, actuators and
other items to be operated without removing any parts. This non-intrusive functional
inspection can be very useful because inter ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...
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