DTC C2121/21 No Signal from Transmitter ID1. DTC C2122/22 No Signal from Transmitter ID2. DTC C2123/23 No Signal from Transmitter ID3

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1 TIRE ND WHEEL TIRE PRESSURE WRNI SYSTEM 33 DTC C2121/21 No Signal from Transmitter ID1 DTC C2122/22 No Signal from Transmitter ID2 DTC C2123/23 No Signal from Transmitter ID3 DTC C2124/24 No Signal from Transmitter ID4 DTC C2125/25 No Signal from Transmitter ID5 DTC C2181/81 Transmitter ID1 not Received (Test Mode DTC) DTC C2182/82 Transmitter ID2 not Received (Test Mode DTC) DTC C2183/83 Transmitter ID3 not Received (Test Mode DTC) DTC C2184/84 Transmitter ID4 not Received (Test Mode DTC) DTC C2185/85 Transmitter ID5 not Received (Test Mode DTC) DESCRIPTION The tire pressure monitor valve sub-assembly constantly sends radio waves to the tire pressure monitor receiver assembly. If the battery for the tire pressure monitor valve sub-assembly is depleted, or if the tire pressure monitor receiver assembly is defective or comes off, the DTC will be output. DTCs C2121/21 to C2125/25 can only be deleted by the tester. DTCs C2181/81 to C2185/85 can be deleted when the transmitter sends a force transmission signal or the test mode ends. DTCs C2181/81 to C2185/85 are output only in the test mode. DTC No. DTC Detecting Condition Trouble rea C2121/21 C2122/22 C2123/23 C2124/24 C2125/25 C2181/81 C2182/82 C2183/83 C2184/84 C2185/85 DTC is detected when the ECU receives no signals for 51 minutes or more, the vehicle speed is 8 km/h or higher, and the ECU receives no signals for 12 minutes or more. Tire pressure monitor receiver assembly Each tire pressure monitor valve sub-assembly Tire pressure monitor ECU It is necessary to perform the procedure to identify the tire pressure monitor valve sub-assembly that is malfunctioning because it cannot be identified by the output DTC.

2 34 TIRE ND WHEEL TIRE PRESSURE WRNI SYSTEM WIRI DIGRM Sub-assembly Front LH T17 Tire Pressure Monitor Receiver Tire Pressure Monitor ECU +5V 5 12 C12 L L L BD1 IE1 8 RF5V Sub-assembly Front RH 1 11 C14 GR GR GR BD1 IE1 7 Sub-assembly Rear LH GND 4 1 C15 LG-B LG-B LG-B BD1 IE1 16 GND2 Sub-assembly Rear RH Sub-assembly Spare F045859E01 INSPECTION PROCEDURE Set the tire pressure to the specified value. 1 CHECK TIRE PRESSURE WRNI LIGHT Result (b) Turn the ignition switch to the ON position. Check the tire pressure warning light. Proceed to B Result Does not blink Comes on and goes off repeatedly at 0.5 second intervals B Go to step 4

3 TIRE ND WHEEL TIRE PRESSURE WRNI SYSTEM 35 2 CLER DTC 3 CHECK DTC Check for DTC. : DTC is not output. Go to step 4 GO TO PROBLEM SYMPTOMS TBLE 4 CHECK DTC Check if DTCs C2121/21, C2122/22, C2123/23, C2124/ 24 and C2125/25 are all output. NO Go to step 7 YES 5 CHECK HRNESS ND CONNECTOR (TIRE PRESSURE WRNI RECEIVER - TIRE PRESSURE MONITOR ECU) Tire Pressure Monitor ECU: Disconnect the tire pressure monitor receiver assembly T17 connector and tire pressure monitor ECU connector. RF5V GND2 F045860E01 Tire Pressure Monitor Receiver ssembly: T17 +5V GND F045861E01 (b) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition -7 () - T17-1 () Below 1 Ω -8 (RF5V) - T17-5 (+5V) Below 1 Ω -16 (GND2) - T17-4 (GND) Below 1 Ω -7 () - Body ground 10 kω or higher -8 (RF5V) - Body ground 10 kω or higher -16 (GND2) - Body ground 10 kω or higher

4 36 TIRE ND WHEEL TIRE PRESSURE WRNI SYSTEM REPIR OR REPLCE HRNESS OR CONNECTOR 6 CHECK TIRE PRESSURE WRNI RECEIVER Tire Pressure Monitor ECU: (b) Connect the tire pressure monitor ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Specified Condition -8 (RF5V) (GND2) 4.5 to 5.5 V +5V GND GO TO POWER SOURCE CIRCUIT F045868E02 REPLCE TIRE PRESSURE WRNI RECEIVER 7 SET TIRE PRESSURE TO NORML VLUE Set the tire pressure of all wheels to the specified value. Front Rear Spare 220 kpa (2.2 kgf/cm 2, 32 psi) 220 kpa (2.2 kgf/cm 2, 32 psi) 220 kpa (2.2 kgf/cm 2, 32 psi) 8 IDENTIFY TRNSMITTER CORRESPONDI TO DTC Refer to "Error in Present while Identifying Transmitter" (See page -51). 9 INTERCHE TIRES When "" (left front) is identified at step 8.

5 TIRE ND WHEEL TIRE PRESSURE WRNI SYSTEM 37 Example: Front Interchange tire "" for the identified tire pressure monitor valve sub-assembly with tire "B" for a normal one. B F046785E01 10 SET TIRE PRESSURE TO NORML VLUE Set the tire pressure of all wheels to the specified value. Front Rear Spare 220 kpa (2.2 kgf/cm 2, 32 psi) 220 kpa (2.2 kgf/cm 2, 32 psi) 220 kpa (2.2 kgf/cm 2, 32 psi) 11 FORCIBLY TRNSMIT TRNSMITTER ID Example: Front Remove the valve core of the tire "", rapidly reduce the tire pressure and forcibly transmit the transmitter ID of the tire pressure monitor valve sub-assembly. F046786E01 12 CHECK DTC Check for DTC. : DTC is not output If a DTC is output, replace the identified tire pressure monitor valve sub-assembly. Register the transmitter ID after replacing and then set the tire pressure to the specified value. REPLCE TIRE PRESSURE WRNI VLVE ND TRNSMITTER

6 38 TIRE ND WHEEL TIRE PRESSURE WRNI SYSTEM REPLCE TIRE PRESSURE WRNI RECEIVER