| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM0000018KZ008X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: TIRE AND WHEEL: TIRE PRESSURE WARNING SYSTEM: TERMINALS OF ECU; 2007 MY LX470 [08/2006 - ] | ||
TERMINALS OF ECU
HINT:
Inspect the connectors from the back side.
1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER
(a) Disconnect the T35 ECU connector.
(b) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbols) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
T35-1 (IG) - T35-9 (GND) |
B-W - W-B |
IG power source |
Ignition switch ON |
10 to 16 V |
(c) Connect the T35 ECU connector.
(d) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbols) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
T35-3 (SPD) - T35-9 (GND) |
V-W - W-B |
Vehicle speed signal |
Vehicle is running |
Pulse generation (see waveform 1) |
|
T35-4 (SIL) - T35-9 (GND) |
V-W - W-B |
Diagnosis tester communication line |
Ignition switch ON, when communication is not performed with a tester |
8 to 15 V |
|
T35-5 (IND) - T35-9 (GND) |
G-R - W-B |
Tire pressure warning light output signal |
Ignition switch ON, tire pressure warning light ON |
Below 0.5 V |
|
T35-8 (CALSW) - T35-9 (GND) |
G-W - W-B |
Tire pressure warning reset switch |
Ignition switch ON Tire pressure warning reset switch OFF |
8 to 15 V |
|
T35-8 (CALSW) - T35-9 (GND) |
G-W - W-B |
Tire pressure warning reset switch |
Ignition switch ON Tire pressure warning reset switch ON |
Below 1.5 V |
|
T35-7 (IDSW) - T35-9 (GND) |
G - W-B |
Tire pressure warning select switch |
Ignition switch ON Tire pressure warning select switch ON |
Below 1.5 V |
|
T35-7 (IDSW) - T35-9 (GND) |
G - W-B |
Tire pressure warning select switch |
Ignition switch ON Tire pressure warning select switch OFF |
8 to 15 V |
|
T35-9 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
T35-10 (TC) - T35-9 (GND) |
P-B - W-B |
TC terminal |
When terminal TC is not connected |
8 to 15 V |
If the result is not as specified, the ECU may have a malfunction.
2. Waveform 1 (Reference)
|
(a) Waveform
|
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|
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