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
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 | ![]() |
GO TO CAN COMMUNICATION SYSTEM
|
|
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 |
Toyota CH-R Service Manual > Automatic High Beam System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer
to registration.*1
*1: w/ Smart Key System
When replacing the forward recognition camera, always replace it with
a new one. If a forward recognition camera which was inst ...
Toyota CH-R Service Manual > Lighting System: Open in IG Circuit (B242E)
DESCRIPTION
This DTC is stored when a malfunction occurs in the headlight ECU sub-assembly
LH IG power source circuit. The headlight ECU sub-assembly LH stores DTC B242E.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
...