C2175

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2175/75: Vehicle Speed or RSSI Signal Error
C2175/75 - Vehicle Speed or RSSI Signal Error

DESCRIPTION

The tire pressure warning ECU receives a vehicle speed signal from the combination meter assembly and a RSSI signal from the tire pressure warning antenna and receiver. The tire pressure warning ECU uses these signals to detect DTCs C2121/21 to C2124/24 (No Signal from Transmitter) and DTC C2177/77 (Initialization not Completed).





HINT
This DTC is stored at the same time as DTCs C2121/21 to C2124/24 are being stored.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
- When replacing the tire pressure warning ECU, read the transmitter IDs stored in the old ECU using the Techstream and write them down before removal.
- It is necessary to perform initialization Initialization after registration Registration of the transmitter IDs into the tire pressure warning ECU if the ECU and/or one of the valve and transmitters has been replaced.

PROCEDURE

1. READ OUTPUT DTC (DTCs C2121/21 to C2124/24)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / Tire Pressure Monitor / Trouble Codes.

(f) Read the DTCs.

Result:





NOTICE:
When DTCs C2121/21 to C2124/24 is output, troubleshoot that DTCs first. Then troubleshoot DTCs C2175/75.

B -- GO TO DTCs C2121/21 to C2124/24 Transmitter ID4 not Received (Test Mode DTC) - Tire Pressure Monitoring
A -- Continue to next step.

2. PERFORM SIGNAL CHECK (VEHICLE SPEED SIGNAL AND RSSI SIGNAL)

(a) Enter the signal check mode in Test Mode Procedure Test Mode Procedure.

(b) Turn the power switch on (IG) and wait for 3 seconds or more to clear DTC C2196/96.

(c) Drive the vehicle at 20 km/h (12 mph) or more for 10 seconds to clear DTC C2191/91.

(d) Check for test mode DTCs.

Result:





HINT
DTCs C2181/81 to C2184/84 (Transmitter ID not Received) are output at this time, but they are not related to this check.

C -- GO TO DTC C2196/96 C2196

B -- GO TO DTC C2191/91 C2191
A -- Continue to next step.

3. RECONFIRM DTC OUTPUT (DTC C2175/75)

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Drive the vehicle at 50 km/h or more for at least 20 minutes.

(e) Turn the Techstream on.

(f) Enter the following menus: Chassis / Tire Pressure Monitor / Trouble Codes.

(g) Read DTCs.

Result:





HINT
If the DTC is not output, it can be determined that the system is functioning normally and that the DTC was stored due to radio wave interference.

B -- REPLACE TIRE PRESSURE WARNING ECU Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting