Toyota Tacoma (2015-2018) Service Manual: Initialization Switch (for Test Mode DTC) (C2198/98)
DESCRIPTION
During test mode, when the tire pressure warning reset switch is on, the tire pressure warning light comes on and when the tire pressure warning reset switch is off, the tire pressure warning light blinks at 0.125 second intervals.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C2198/98 |
Test mode procedure is performed. |
|
WIRING DIAGRAM
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. |
INSPECT TIRE PRESSURE WARNING RESET SWITCH |
|
(a) Disconnect the T15 tire pressure warning reset switch connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 (INT) - 2 (E) |
On |
Below 1 Ω |
|
Off |
10 kΩ or higher |
|
*a |
Component without harness connected (Tire Pressure Warning Reset Switch) |
|
*b |
On |
|
*c |
Off |
| NG | .gif) |
REPLACE TIRE PRESSURE WARNING RESET SWITCH |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING RESET SWITCH - TIRE PRESSURE WARNING ECU AND RECEIVER) |
(a) Disconnect the T15 tire pressure warning reset switch connector and T14 tire pressure warning ECU and receiver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
T14-3 (CLSW) - T15-1 (INT) |
Always |
Below 1 Ω |
|
T14-3 (CLSW) - Body ground |
Always |
10 kΩ or higher |
|
T15-2 (E) - Body ground |
Always |
Below 1 Ω |
| OK | |
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Tire Pressure Monitor ECU Communication Stop (C2179/79)
DESCRIPTION
The main body ECU (multiplex network body ECU) sends signals to the tire pressure
warning ECU and receiver via a direct line.
DTC No.
Detection Item
DT ...
Tire Pressure Monitor Receiver Communication Stop (B1247)
DESCRIPTION
The main body ECU (multiplex network body ECU) and tire pressure warning ECU
and receiver are connected using 2 direct lines that they use to communicate with
each other.
...
Other materials:
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Double Cab
*B
for Access Cab
*C
w/ Back Door Power Window
-
-
*1
NO. 1 BACK PANEL RELAY
*2
NO. 2 BACK PANEL RELAY
...
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
1. DESCRIPTION
HINT:
A momentary interruption (open circuit) in the connectors and/or wire harness
between the sensors and ECUs can be detected through the ECU data monitor function
of the Techstream.
(a) Turn the ignition switch off.
(b) Connect the Techstre ...
Meter Illumination does not Dim at Night
DESCRIPTION
In this circuit, the combination meter assembly auto dimmer signals from the
main body ECU using the CAN communication system (CAN V1 Bus). When the combination
meter assembly an auto dimmer signal, it dims the meter illumination (warning and
indicator lights). The main body ECU ( ...
