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 |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
C2179/79 |
Tire Pressure Monitor ECU Communication Stop |
Communication between the main body ECU (multiplex network body ECU) and tire pressure warning ECU and receiver is interrupted for 10 seconds or more. |
|
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
*: w/ Smart Key System
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PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU AND RECEIVER - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Turn the ignition switch off.
(b) Disconnect the M23 tire pressure warning ECU and receiver connector.
(c) Disconnect the F15 main body ECU (multiplex network body ECU) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
M23-5 (PRG) - F15-5 (PRG) |
Always |
Below 1 Ω |
M23-5 (PRG) or F15-5 (PRG) - Body ground |
Always |
10 kΩ or higher |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER |
(a) Replace the tire pressure warning ECU and receiver.
Click here
|
3. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
Chassis > Tire Pressure Monitor > Clear DTCs(b) Turn the ignition switch off.
(c) Turn the ignition switch to ON.
(d) Check for DTCs.
Click here
Chassis > Tire Pressure Monitor > Trouble CodesOK:
DTC C2179/79 is not output.
OK |
END |
NG |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
Toyota CH-R Service Manual > Vacuum Warning Switch: Components
COMPONENTS
ILLUSTRATION
*1
COWL BODY MOUNTING REINFORCEMENT LH
*2
COWL BODY MOUNTING REINFORCEMENT RH
*3
NO. 1 HEATER AIR DUCT SPLASH SHIELD SEAL
*4
OUTER COWL TOP PANEL SUB-ASSEMBLY
*5 ...
Toyota CH-R Service Manual > Safety Connect System: Data List / Active Test
DATA LIST / ACTIVE TEST
DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals may ...