RM35X0E _53 Suspension _078885 TIRE PRESSURE MONITORING _0382739 TIRE PRESSURE WARNING SYSTEM U

TIRE PRESSURE MONITORING  TIRE PRESSURE WARNING SYSTEM  TERMINALS OF ECU  


CHECK TIRE PRESSURE WARNING ECU AND RECEIVER


a.
C368906C16
0.198,0.896 0.583,1.177 0.385,0.281 0.198,1.25 0.583,1.531 0.385,0.281 0.302,0.948 0.76,1.146 0.458,0.198 10 false Z3 0.104,0.094 0.417,0.292 0.313,0.198 10 false *a 0.281,1.302 0.74,1.5 0.458,0.198 10 false Z30 0.635,0.938 1.094,1.135 0.458,0.198 10 false *A 0.635,1.292 1.094,1.49 0.458,0.198 10 false *B
*A Non-Integration Type
*B Integration Type
*a Front view of wire harness connector
(to Tire Pressure Warning ECU and Receiver)


Disconnect the tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side.

Non-Integration Type:
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
Z3-1 (IG) - Z3-12 (GND) L - BR IG power source Ignition switch ON 10 to 16 V
Z3-7 (+B) - Z3-12 (GND) GR - BR Power supply (from battery) Always 10 to 16 V
Z3-12 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

Integration Type:
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
Z30-1 (IG) - Z30-12 (GND) L - W-B IG power source Ignition switch ON 10 to 16 V
Z30-7 (+B) - Z30-12 (GND) SB - W-B Power supply (from battery) Always 10 to 16 V
Z30-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω


b.

Connect the tire pressure warning ECU and receiver connector.


c.

Measure the voltage and resistance according to the value(s) in the table below. If the result is not as specified, the ECU may be malfunctioning.

HINT:

Measure the values on the wire harness side while the connector is connected.


C419443C01
1.76,0.74 2.188,1 0.427,0.26 1.76,1.052 2.188,1.313 0.427,0.26 0.115,0.094 0.438,0.344 0.323,0.25 10 false *a 1.875,0.792 2.323,0.99 0.448,0.198 10 false Z3 1.844,1.104 2.292,1.302 0.448,0.198 10 false Z30 2.24,0.781 2.688,0.979 0.448,0.198 10 false *A 2.24,1.083 2.688,1.281 0.448,0.198 10 false *B
*A Non-Integration Type *B Integration Type
*a Component with harness connected
(Tire Pressure Warning ECU and Receiver) 		- -


Non-Integration Type:
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
Z3-3 (CLSW) - Z3-12 (GND) W - BR Tire pressure warning reset switch
·

Ignition switch ON

·

Tire pressure warning reset switch on


Below 1.5 V
·

Ignition switch ON

·

Tire pressure warning reset switch off


8 to 15 V
Z3-4 (RDA2) - Z3-12 (GND) G - BR Output signals Ignition switch ON Pulse generation (see waveform 1)
Z3-5 (PRG2) - Z3-12 (GND) L - BR Input signals Ignition switch ON Pulse generation (see waveform 1)

Integration Type:
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
Z30-3 (CLSW) - Z30-12 (GND) W - W-B Tire pressure warning reset switch
·

Ignition switch ON

·

Tire pressure warning reset switch on


Below 1.5 V
·

Ignition switch ON

·

Tire pressure warning reset switch off


8 to 15 V
Z30-4 (RDA) - Z30-12 (GND) P - W-B Output signals Ignition switch ON Pulse generation (see waveform 1)
Z30-5 (PRG) - Z30-12 (GND) R - W-B Input signals Ignition switch ON Pulse generation (see waveform 1)


d.
C240058C03
2.875,1.229 3.115,1.438 0.24,0.208 10 false *b 0.115,0.104 0.323,0.323 0.208,0.219 10 false *a
*a Example
*b GND


Using an oscilloscope, check waveform 1.

Waveform 1:
Item Contents
Terminal Z3-4 (RDA2) - Z3-12 (GND)*1
Z3-5 (PRG2) - Z3-12 (GND)*1
Z30-4 (RDA) - Z30-12 (GND)*2
Z30-5 (PRG) - Z30-12 (GND)*2
Tool setting 5 V/DIV, 5 ms./DIV.
Vehicle condition Ignition switch ON

*1: Non-Integration Type

*2: Integration Type


HINT:

The waveform shown in the illustration is an example. If the tester displays a waveform that alternates between high and low, where high is a voltage that is between the IG power source voltage and a voltage 2.2 V lower than the IG power source voltage, and where low is a voltage of between 0 and 1.2 V, the ECU can be judged normal.