Test Mode Procedure

TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: TEST MODE PROCEDURE

1. TEST MODE CHECK

HINT
* When entering the TEST MODE, the tire pressure warning ECU sets all the test DTCs first. After completing the test mode for each inspection item, the DTCs that are determined normal by the tire pressure warning ECU will be erased.
* The DTCs for other inspection items may not be erased when only a certain signal is inspected.
* When the test mode returns back to the normal mode, all the test DTCs will be erased.
(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch ON.

(d) Check that the tire pressure warning light comes on for 3 seconds and then goes off.

(e) Turn the Techstream on.

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





(g) Confirm that the tire pressure warning light in the combination meter blinks at 0.125 second intervals.

2. PERFORM SIGNAL CHECK

HINT
* When entering the signal check, the tire pressure warning ECU sets all the signal check DTCs first. After completing the signal check for each inspection item, the DTCs that are determined normal by the tire pressure warning ECU will be erased. The DTCs for other inspection items may not be erased when only a certain signal is inspected.
* When the signal check returns back to normal mode, all the signal check DTCs will be erased.
(a) Make sure that the ignition switch is off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch ON.

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

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.

(e) Start the engine and allow it to run at 1000 rpm for 3 seconds or more to check the engine speed signal (C2194/94).

(f) Drive the vehicle at 20 km/h (12 mph) or more for 3 seconds or more (C2191/91).

(g) Loosen the valve core and rapidly reduce the tire pressure for each wheel at least 40 kPa (0.4 kgf/cm2, 5.8 psi) within 30 seconds (C2181/81 to C2185/85).

HINT
The transmitter IDs can be transmitted by rapidly reducing the tire pressure.

(h) Result

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





(i) End of SIGNAL CHECK

(1) After completing the test mode (SIGNAL CHECK), turn the ignition switch off and disconnect the Techstream.

(j) DTC of SIGNAL CHECK (TEST DIAGNOSIS)

(1) If a trouble code is displayed during the test mode DTC check, check the circuit listed for that code. For details of each code, refer to "See procedure" below.