Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - TIRE PRESSURE MONITORING

DTC C2179/79 Tire Pressure Monitor ECU Communication Stop

DESCRIPTION

The tire pressure warning ECU and receiver receives speed signals from the combination meter assembly via CAN communication.

DTC No.	DTC Detection Condition	Trouble Area
C2179/79	Tire pressure warning ECU and receiver communication disruption.	CAN communication system Vehicle speed signal circuit Combination meter assembly Tire pressure warning ECU and receiver

INSPECTION PROCEDURE

NOTICE:

When replacing the tire pressure warning ECU and receiver, read the transmitter IDs stored in the old ECU using the GTS and write them down before removal.

It is necessary to perform initialization () after registration () of the transmitter IDs into the tire pressure warning ECU and receiver if the ECU has been replaced.

1.CHECK CAN COMMUNICATION SYSTEM

Turn the engine switch off.

Connect the GTS to the DLC3.

Turn the engine switch on (IG) and turn the GTS on.

Enter the following menus: "CAN Bus Check" from the "System Select" screen.

Check the CAN communication system (for LHD: , for RHD: ).

Result:
Result Proceed to
OK A
NG (for LHD) B
NG (for RHD) C

OK:
The CAN communication system is normal.

B

GO TO CAN COMMUNICATION SYSTEM ()

C

GO TO CAN COMMUNICATION SYSTEM ()

A

2.CHECK VEHICLE SPEED SIGNAL (DATA LIST)

Turn the engine switch off.

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

Check that the values indicated on the GTS and on the combination meter assembly are the same.

Tire Pressure Monitor
Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Vehicle Speed	Vehicle speed reading/ min.: 0 km/h (0 mph), max.: 255 km/h (158 mph)	Actual vehicle speed	Speed indicated on the combination meter assembly

OK:
The vehicle speed displayed on the GTS changes depending on the actual vehicle speed.

NG

GO TO METER / GAUGE SYSTEM ()

OK

3.CHECK TEST MODE DTC (C2191/91)

Turn the engine switch off.

Connect the GTS to the DLC3.

Turn the engine switch on (IG).

Turn the GTS on.

Enter the following menus: Chassis / Tire Pressure Monitor / Utility / Signal Check.

Perform the test mode inspection ().

Result:
Result Proceed to
DTCs C2191/91 is cleared A
DTC C2191/91 is not cleared B

B

REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER ()

A

CHECK FOR INTERMITTENT PROBLEMS ()

TIRE PRESSURE MONITORING

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

TIRE PRESSURE WARNING SYSTEM

Result	Proceed to
DTCs C2191/91 is cleared	A
DTC C2191/91 is not cleared	B