DESCRIPTION
This DTC will be stored if the power steering ECU assembly determines that the assist map is not written in the ECU.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Return-to-normal Condition |
Note |
---|---|---|---|---|---|---|
C1581 |
Assist Map Number Un-Writing |
Assist map not written in power steering ECU assembly |
|
EPS warning light: Comes on |
Assist Map Writing is performed or the ignition switch is turned ON again |
- |
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:
Related parts store information necessary for assist map writing.
Related Part:
PROCEDURE
1. |
PERFORM ASSIST MAP WRITING |
(a) Perform assist map writing.
Click here
Chassis > EMPS > Utility
Tester Display |
---|
Signal Check |
(b) Check for DTCs.
Click here
Chassis > EMPS > Trouble Codes
Result |
Proceed to |
---|---|
DTC C1581 is output. |
A |
DTC C1581 is not output. |
B |
NOTICE:
DTC C1581 is cleared after the assist map is written.
B |
END |
|
2. |
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 |
|
3. |
CHECK RELATED PART |
(a) Confirm if the related part has the correct part number.
Related Part |
ECM |
Main body ECU (Multiplex network body ECU) |
|
Skid control ECU (Brake actuator assembly) |
NOTICE:
When removing the related part to check it, be sure to follow the appropriate procedures and precautions.
Click here
Click here
Result |
Proceed to |
---|---|
The related part has the correct part number. |
A |
The related part has an incorrect part number. |
B |
B |
GO TO STEP 5 |
|
4. |
CHECK FOR DTC |
(a) Select Health Check on the Techstream screen and check if system DTCs of the related part are output.
HINT:
If system DTCs of the related part are stored, assist map writing to the power steering ECU assembly may not be performed properly.
Result |
Proceed to |
---|---|
System DTCs of the related part are output. |
A |
System DTCs of the related part are not output. |
B |
A |
REPAIR CIRCUIT INDICATED BY OUTPUT CODE |
B |
REPLACE POWER STEERING ECU ASSEMBLY |
5. |
REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER |
(a) Replace the related part with one that has the correct part number.
Click here
Click here
|
6. |
CHECK FOR DTC |
(a) Check for DTCs.
Click here
Chassis > EMPS > Trouble Codes
Result |
Proceed to |
---|---|
DTCs are not output. |
A |
DTCs are output. |
B |
A |
END |
B |
REPLACE POWER STEERING ECU ASSEMBLY |
Toyota CH-R Service Manual > Smart Key System(for Start Function): Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" column of the
table. Check each sy ...
Toyota CH-R Service Manual > Door Control Transmitter(w/o Smart Key System): Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
Take extra care when handling these precision electronic components.
PROCEDURE
1. INSTALL TRANSMITTER BATTERY
(a) Install a new transmitter battery with the positive (+) side facing upward,
as shown in the illustration.
Inst ...