Test Mode Procedure

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

1. 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 pushing the tire pressure warning reset switch. The circuit of the tire pressure warning reset switch can be inspected during this mode.
(a) Turn the ignition switch off.

(b) Connect Techstream to DLC3.

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

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

(e) Turn the tester 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 signal check mode, the tire pressure warning ECU sets all the signal check DTCs first.
* After completing signal check for each inspection item, the DTCs for systems that are determined to be 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 signal check returns to normal mode, all the signal check DTCs will be erased.
(a) Turn the ignition switch off.

(b) Connect Techstream to DLC3.

(c) Turn the ignition switch on (IG) and turn the tester on.

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

HINT
Every time the test mode DTC clearing 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 12 mph (20 km/h) or more for 3 seconds or more to check the vehicle speed signal (C2191/91).

(g) Loosen the valve core and rapidly reduce the pressure (at least 40 kPa (0.41 kg/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.

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





(i) Check the tire pressure warning reset switch.

(1) Press the tire pressure warning reset switch.

(2) Check the tire pressure warning indicator light.





(j) Result

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





(k) End of SIGNAL CHECK

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

(l) 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 the applicable Diagnostic Trouble Code Test below.