Test Mode Procedure

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

ENTER TEST MODE
HINT:
- Operation of the tire pressure warning reset switch can be checked in TEST MODE.
- During TEST MODE, the system is not initialized by pressing the tire pressure warning reset switch. The circuit of the tire pressure warning reset switch can be inspected during this mode.
1. Make sure that the ignition switch is OFF.
2. Connect the intelligent tester to the DLC3.
3. Turn the ignition switch ON.
4. Check that the tire pressure warning light comes on for 3 seconds and then goes off.
  
  Fig 1: Connecting Intelligent Tester To DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Select TEST MODE on the intelligent tester.
  
  Fig 2: Display TEST MODE Screen On Intelligent Tester
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Confirm that the tire pressure warning light in the combination meter blinks at 0.125 second intervals.

PERFORM SIGNAL CHECK

HINT:

When entering the signal check mode, the tire pressure warning ECU and receiver sets all the signal check DTCs first.
After completing the signal check for each inspection item, the DTCs that are determined to be normal by the tire pressure warning ECU and receiver will be cleared.

Fig 3: Identifying Tire Pressure Warning Light Blinking Pattern
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The DTCs for other inspection items may not be cleared when only a certain signal is inspected.
When signal check returns to normal mode, all the signal check DTCs will be erased.

Make sure that the ignition switch is OFF.
Connect the intelligent tester to the DLC3.
Turn the ignition switch ON.
Select the SIGNAL CHECK on the intelligent tester.
HINT:

Every time the test mode DTC erasure conditions are satisfied, the tire pressure warning light comes on for 1 second. Then, the tire pressure warning light blinks at 0.125 second intervals.

Fig 4: Connecting Intelligent Tester (With CAN VIM) To DLC3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Screen Display - Tire Pressure Warning System
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Drive the vehicle at 20 km/h (12 mph) or more for 3 seconds or more to check the vehicle speed signal (C2191/91).
Loosen the valve core and rapidly reduce the pressure (at least 40 kPa (0.4 kgf/cm² , 5.8 psi) within 30 seconds or more) to check the transmitter data (C2181/81 to C2185/85).
HINT:

The transmitter ID can be transmitted by rapidly reducing the tire pressure.
Turn the select switch from off (MAIN) to on (2nd) and then to off (MAIN) to check the select switch signal (C2192/92).

Check that the tire pressure warning system test mode DTCs are erased.

TIRE PRESSURE SPECIFICATIONS

Test Mode DTC	Test Signal	Test Mode DTC Clear Condition
C2181 to C2185	Transmitter Data	Receive data from the transmitter which has an ID registered in the tire pressure warning ECU and receiver
C2191	Vehicle Speed Signal	Vehicle speed of 20 km/h (12 mph) or more is detected for 3 seconds or more
C2192/92	Tire Pressure Warning Select Switch	Change the mode by pressing the tire pressure warning select switch in the following order: MAIN → 2nd → MAIN
C2195/95	Open in tire pressure warning antenna (multi-receiver type)	Voltage of right antenna and/or left antenna terminal is below regulation value

Check the tire pressure warning reset switch.

Press the tire pressure warning reset switch.
Check the tire pressure warning light.

TIRE PRESSURE SPECIFICATIONS

Test Signal	Normal Condition
Tire Pressure Warning Reset Switch	Switch ON: Tire pressure warning light turns on Switch OFF: Tire pressure warning light blinks

Result

HINT:

After the signal check is completed, check for a DTC and signal check DTC to confirm the system status.

RESULT REFERENCE CHART

Condition	Procedure
Test Mode DTC is output	Repair the faulty part and enter SIGNAL CHECK again
Test Mode DTCs are cleared	No problem

End of SIGNAL CHECK
After completing the test mode (SIGNAL CHECK), turn the ignition switch OFF and disconnect the tester.

DTC of SIGNAL CHECK (TEST DIAGNOSIS)

If a trouble code is displayed during the test mode DTC check, check the circuit indicated by the code. For details of each code, refer to the "See" below.

RESULT REFERENCE CHART

DTC No.	Detection Item	Trouble Area
C2181/81	Transmitter ID1 not received	Each tire pressure warning valve and transmitter Tire pressure warning antenna Tire pressure warning ECU and receiver Wire harness or connector
C2182/82	Transmitter ID2 not received	Each tire pressure warning valve and transmitter Tire pressure warning antenna Tire pressure warning ECU and receiver Wire harness or connector
C2183/83	Transmitter ID3 not received	Each tire pressure warning valve and transmitter Tire pressure warning antenna Tire pressure warning ECU and receiver Wire harness or connector
C2184/84	Transmitter ID4 not received	Each tire pressure warning valve and transmitter Tire pressure warning antenna Tire pressure warning ECU and receiver Wire harness or connector
C2185/85	Transmitter ID5 not received	Each tire pressure warning valve and transmitter Tire pressure warning antenna Tire pressure warning ECU and receiver Wire harness or connector
C2191/91	Vehicle speed signal error	Vehicle speed sensor Combination meter Tire pressure warning ECU and receiver Wire harness or connector
C2192/92	Tire select switch malfunctions	Tire pressure warning select switch Tire pressure warning ECU and receiver Wire harness or connector
C2195/95	Open in tire pressure warning antenna (multi-receiver type)	Tire pressure warning antenna Wire harness or connector Tire pressure warning ECU and receiver