Lexus ES: Error in Matching of ECUs (C1567)
DESCRIPTION
The power steering ECU (rack and pinion power steering gear assembly) determines whether an incompatible ECM or skid control ECU (brake actuator assembly) is installed based on the identification information.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Return-to-normal Condition | Note |
|---|---|---|---|---|---|---|
| C1567 | Error in Matching of ECUs |
|
| EPS warning light: Comes on | Engine switch on (IG) again | - |
CAUTION / NOTICE / HINT
NOTICE:
If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.
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PROCEDURE
| 1. | CHECK RELATED PART |
(a) Confirm if the related part has the correct part number.
| Related Part | ECM |
| Skid control ECU (Brake actuator assembly) |
NOTICE:
When removing the related part to check it, be sure to follow the appropriate procedures and precautions.
-
ECM
Click here
-
Skid control ECU (Brake actuator assembly)
Click here
| Result | Proceed to |
|---|---|
| The related part has the correct part number. | A |
| The related part has an incorrect part number. | B |
| B | .gif) | GO TO STEP 3 |
|
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| 2. | 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 (rack and pinion power steering gear 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 RACK AND PINION POWER STEERING GEAR ASSEMBLY |
| 3. | REPLACE RELATED PART WITH PART THAT HAS CORRECT PART NUMBER |
(a) Replace the related part with one that has the correct part number.
-
ECM
Click here
-
Skid control ECU (Brake actuator assembly)
Click here
|
| 4. | CHECK FOR DTC |
(a) Check for DTCs.
Chassis > EMPS > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| A | | END |
| B | | REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY |
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DESCRIPTION This DTC will be stored if the power steering ECU (rack and pinion power steering gear assembly) determines that the assist map is not written in the ECU. DTC No. Detection Item DTC
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DESCRIPTION This DTC will be stored if the power steering ECU (rack and pinion power steering gear assembly) determines that the assist map is not written in the ECU. DTC No. Detection Item DTC
SEE MORE:
Parts Location
PARTS LOCATION ILLUSTRATION *1 FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (for LH) *2 FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (for RH) *3 SLIDING ROOF SWITCH (MAP LIGHT SUB-ASSEMBLY) *4 SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) *5 COMBINATION METER ASSEMBLY
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DESCRIPTION If the vehicle information stored in the forward recognition camera does not match the vehicle information sent from the skid control ECU (brake booster with master cylinder assembly), the forward recognition camera stores DTC U031857. DTC No. Detection Item DTC Detection Conditio
