DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK CAN COMMUNICATION LINE
CHECK HARNESS AND CONNECTOR (DLC3 - ECM)
INSPECT DLC3 (TC VOLTAGE)
TIRE PRESSURE WARNING SYSTEM - TC and CG Terminal Circuit
DESCRIPTION
DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by the tire pressure warning light blinking pattern.
WIRING DIAGRAM
- If the tire pressure warning light blinks continuously, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in each ECU is suspected.
INSPECTION PROCEDURE
| 1.CHECK CAN COMMUNICATION LINE |
Turn the engine switch off.
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and turn the GTS on.
Enter the following menus: "CAN Bus Check" from the "System Select" screen.
Check the CAN communication system (for LHD: , for RHD: ).
- OK:
- The CAN communication system is normal.
- Result:
| Result | Proceed to |
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM ()
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| | GO TO CAN COMMUNICATION SYSTEM ()
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| 2.CHECK HARNESS AND CONNECTOR (DLC3 - ECM) |
Disconnect the ECM A38*1, A52*2 connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
for LHD| Tester Connection | Condition | Specified Condition |
| E22-13 (TC) - A38-16*1, 27*2(TC) | Always | Below 1 Ω |
| E22-13 (TC) or A38-16*1, 27*2(TC) - Body ground | Always | 10 kΩ or higher |
| E22-4 (CG) - Body ground | Always | Below 1 Ω |
*1: for 1UR-FE
*2: for 1VD-FTV
- Standard Resistance:
for RHD| Tester Connection | Condition | Specified Condition |
| E22-13 (TC) - A52-27 (TC) | Always | Below 1 Ω |
| E22-13 (TC) or A52-27 (TC) - Body ground | Always | 10 kΩ or higher |
| E22-4 (CG) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.INSPECT DLC3 (TC VOLTAGE) |
Connect the ECM A38*1, A52*2 connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| E22-13 (TC) - E22-4 (CG) | Engine switch on (IG) | 11 to 14 V |
Text in Illustration| *a | Front view of DLC3 |
- Result:
| Result | Proceed to |
| OK | A |
| NG (for 1UR-FE) | B |
| NG (for 1VD-FTV) | C |
| A | |
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| PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE ()
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