- Switch ON: Tire pressure warning light turns on
- Switch OFF: Tire pressure warning light blinks
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000000XN000ZX |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: TEST MODE PROCEDURE; 2007 MY LX470 [08/2006 - ] | ||
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 pressing the tire pressure warning reset switch. The circuit of the tire pressure warning reset switch can be inspected during this mode.
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(a) Make sure that the ignition switch is OFF. |
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(b) Connect the intelligent tester 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.
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(e) Select TEST MODE on the intelligent tester. |
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(f) Confirm that the tire pressure warning light in the combination meter blinks at 0.125 second intervals. |
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2. PERFORM SIGNAL CHECK
HINT:
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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.
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.
(a) Make sure that the ignition switch is OFF.
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(b) Connect the intelligent tester to the DLC3. |
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(c) Turn the ignition switch ON.
(d) 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.
(e) Drive the vehicle at 20 km/h (12 mph) or more for 3 seconds or more to check the vehicle speed signal (C2191/91).
(f) Loosen the valve core and rapidly reduce the pressure (at least 40 kPa (0.4 kgf/cm 2 , 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.
(g) Turn the select switch from off (MAIN) to on (2nd) and then to off (MAIN) to check the select switch signal (C2192/92).
(h) Check that the tire pressure warning system test mode DTCs are erased.
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Test Mode DTC |
Test Signal |
Test Mode DTC Clear Condition |
|---|---|---|
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C2181 to C2185 |
Transmitter Data |
Receive data from the transmitter which has an ID registered in the tire pressure warning ECU and receiver |
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C2191 |
Vehicle Speed Signal |
Vehicle speed of 20 km/h (12 mph) or more is detected for 3 seconds or more |
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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 |
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C2195/95 |
Open in tire pressure warning antenna (multi-receiver type) |
Voltage of right antenna and/or left antenna terminal is below regulation value |
(i) Check the tire pressure warning reset switch.
(1) Press the tire pressure warning reset switch.
(2) Check the tire pressure warning light.
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Test Signal |
Normal Condition |
|---|---|
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Tire Pressure Warning Reset Switch |
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(j) Result
HINT:
After the signal check is completed, check for a DTC and signal check DTC to confirm the system status.
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Condition |
Procedure |
|---|---|
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Test Mode DTC is output |
Repair the faulty part and enter SIGNAL CHECK again |
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Test Mode DTCs are cleared |
No problem |
(k) End of SIGNAL CHECK
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 indicated by the code. For details of each code, refer to the "See page" below.
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DTC No. |
Detection Item |
Trouble Area |
See page |
|---|---|---|---|
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C2181/81 |
Transmitter ID1 not received |
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C2182/82 |
Transmitter ID2 not received |
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C2183/83 |
Transmitter ID3 not received |
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C2184/84 |
Transmitter ID4 not received |
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C2185/85 |
Transmitter ID5 not received |
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C2191/91 |
Vehicle speed signal error |
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C2192/92 |
Tire select switch malfunctions |
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C2195/95 |
Open in tire pressure warning antenna (multi-receiver type) |
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![2007 MY LX470 [08/2006 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/21,...,C2185/85; No Signal from Transmitter ID1 in Main Mode](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: C2121/21,...,C2185/85; No Signal from Transmitter ID1 in Main Mode")
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