Toyota Venza: TC and CG Terminal Circuit
DESCRIPTION
Connecting terminals TC and CG of the DLC3 causes the system to enter self-diagnostic mode. If a malfunction is present, the MIL will blink.
HINT:
When a particular warning light remains blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected.
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (DLC3 - ECM) |
(a) Disconnect the ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
For 1AR-FE|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D1-13 (TC) - A49-7 (TC) |
Always |
Below 1 Ω |
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D1-13 (TC) - A41-16 (TC) |
Always |
Below 1 Ω |
|
*1 |
DLC3 |
|
*2 |
Front view of wire harness connector (to ECM) |
|
*3 |
for 1AR-FE |
|
*4 |
for 2GR-FE |
(c) Reconnect the ECM connector.
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM) |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D1-4 (CG) - Body ground |
Always |
Below 1 Ω |
|
*1 |
DLC3 |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D1-13 (TC) - Body ground |
Always |
10 kΩ or higher |
|
*1 |
DLC3 |
| OK | |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU |
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