СИСТЕМА ECD - TC and CG Terminal Circuit
DESCRIPTION
Terminals TC and CG are located in the DLC3.
The DLC3 is located under the instrument panel under cover. When terminals TC and CG are connected, DTCs in normal mode or test mode can be read from the Malfunction Indicator Lamp (MIL) in the combination meter assembly.
Also, terminal SIL is located in the DLC3. This terminal is used for M-OBD communication with the intelligent tester.
WIRING DIAGRAM
INSPECTION PROCEDURE
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.CHECK DLC3 (CHECK VOLTAGE) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| G48-16 (BAT) - G48-4 (CG) | Always | 11 to 14 V |
Text in Illustration| *a | Front view of wire harness connector
(to DLC3) |
| 2.CHECK HARNESS AND CONNECTOR (ECM - DLC3) |
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
| Tester Connection | Condition | Specified Condition |
| G61-15 (SIL) - G48-7 (SIL) | Always | Below 1 Ω |
| G61-4 (TC) - G48-13 (TC) | Always | Below 1 Ω |
- Standard Resistance (Check for Short):
| Tester Connection | Condition | Specified Condition |
| G61-15 (SIL) or G48-7 (SIL) - Body ground | Always | 10 kΩ or higher |
| G61-4 (TC) or G48-13 (TC) - Body ground | Always | 10 kΩ or higher |
Reconnect the ECM connector.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
Measure the resistance according to the value(s) in the table below.
- Standard Resistance (Check for Open):
| Tester Connection | Condition | Specified Condition |
| G48-4 (CG) - Body ground | Always | Below 1 Ω |
Text in Illustration| *a | Front view of wire harness connector
(to DLC3) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
| OK | |
| |
| REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BATTERY) |
|
