Pre-Collision System (w/o Driver Monitor Camera)

PRE-COLLISION: PRE-COLLISION SYSTEM (w/o Driver Monitor Camera): C1A41: Brake Request Value Mismatch between ENG / EHV and Driving Support ECU
C1A41 - Brake Request Value Mismatch between ENG / EHV and Driving Support ECU

DESCRIPTION

The skid control ECU receives brake control request signals from the ECM and driving support ECU.

When the request signals received from the ECM and driving support ECU are not consistent, the skid control ECU determines that a malfunction has occurred and sends a malfunction signal to the driving support ECU.

If the driving support ECU receives a malfunction signal, DTC C1A41 is output. Although the skid control ECU sends a malfunction signal to the driving support ECU, the ABS does not output a relevant malfunction detection DTC.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code /

(b) Check for DTCs.

OK:

Electronically controlled brake system DTC is not output.

NG -- GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM Electronically Controlled Brake System
OK -- Continue to next step.

2. CHECK FOR DTC (SFI SYSTEM)

(a) Enter the following menus: Powertrain / Engine / Trouble Code /

(b) Check for DTCs.

OK:

SFI system DTC is not output.

NG -- GO TO SFI SYSTEM SFI System
OK -- Continue to next step.

3. REPLACE ECM

(a) Replace the ECM Removal.

NEXT -- Continue to next step.

4. CHECK SKID CONTROL ECU

(a) Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Code /

(b) Select "Clear" and clear the data.

(c) Recheck for DTC.

OK:

DTC C1A41 is not output.

NG -- REPLACE SKID CONTROL ECU

OK -- END

5. REPLACE SKID CONTROL ECU

(a) Replace the skid control ECU Removal.

NEXT -- Continue to next step.

6. CHECK DRIVING SUPPORT ECU

(a) Enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Code /

(b) Select "Clear" and clear the data.

(c) Recheck for DTC.

OK:

DTC C1A41 is not output.

NG -- REPLACE DRIVING SUPPORT ECU Removal

OK -- END