Toyota CH-R Service Manual: TC and CG Terminal Circuit
DESCRIPTION
Connecting terminals TC and CG of the DLC3 causes the ECU to display DTCs by blinking the EPS warning light.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
If the power steering ECU assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
Click here
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HINT:
When the warning lights continue to blink, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in one or more ECUs is suspected.
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check for DTCs.
Click here
|
Result |
Proceed to |
|---|---|
|
CAN communication system DTCs are not output. |
A |
|
CAN communication system DTCs are output. |
B |
| B | .gif) |
GO TO CAN COMMUNICATION SYSTEM
|
|
.gif)
|
2. |
INSPECT DLC3 |
|
(a) Turn the ignition switch to ON. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F41-13 (TC) - F41-4 (CG) |
Ignition switch ON |
9 to 16 V |
| NG | |
GO TO STEP 4 |
|
|
3. |
REPLACE ECU |
|
(a) Turn the ignition switch off. |
|
(b) Replace the ECM.
Click here
(c) Using SST, connect terminals TC and CG of the DLC3.
SST: 09843-18040
(d) Check that the EPS warning light is blinking.
OK:
The EPS warning light is blinking.
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part.
Click here
| OK | |
END |
| NG | |
REPLACE POWER STEERING ECU ASSEMBLY |
|
4. |
CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM) |
(a) Disconnect the A38 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F41-13 (TC) - A38-33 (TC) |
Always |
Below 1 Ω |
|
F41-13 (TC) or A38-33 (TC) - Body ground |
Always |
10 kΩ or higher |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
HINT: If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part. Click here
|
|
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU |
|
|
6. |
REPLACE ECU |
|
(a) Replace the ECM. |
|
(b) Using SST, connect terminals TC and CG of the DLC3.
Click here
SST: 09843-18040
(c) Check that the EPS warning light is blinking.
OK:
The EPS warning light is blinking.
HINT:
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part.
Click here
| OK | |
END |
| NG | |
REPLACE POWER STEERING ECU ASSEMBLY |
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DESCRIPTION
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DTC No.
Detection Item
...
Steering Column
...
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