Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000014VN4
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 09/2018]
Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1417; IG1 Voltage Supply too High; 2018 MY Camry HV [07/2017 - 09/2018]

DTC

C1417

IG1 Voltage Supply too High

DESCRIPTION

If a malfunction is detected in the power source circuit, the skid control ECU (brake booster with master cylinder assembly) stores DTC C1417 and prohibits operation of ABS, brake assist, regenerative brake cooperative control, etc.

DTC C1417 is stored if an excessive ECU voltage due to a malfunction in the auxiliary battery, charging circuit, etc. is detected, and is cleared when the ECU voltage returns to normal.

DTC No.

Detection Item

INF Code

DTC Detection Condition

Trouble Area

Note

C1417

IG1 Voltage Supply too High

553

The internal voltage of the skid control ECU (brake booster with master cylinder assembly) is 16.44 V or more for 0.8 seconds or more.
  • Auxiliary battery
  • Hybrid control system (Charging circuit)
  • Wire harness or connector
  • Improperly connected connector, deformation or corrosion of terminals
  • Skid control ECU (brake booster with master cylinder assembly)

Electronically controlled brake system DTC

WIRING DIAGRAM

Refer to DTCs C1241 and C1242.

Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1241,C1242; Low or High Power Supply Voltage+

CAUTION / NOTICE / HINT

NOTICE:

  • After replacing the skid control ECU (brake booster with master cylinder assembly), perform linear solenoid valve offset learning, ABS holding solenoid valve learning, yaw rate and acceleration sensor zero point calibration and system information memorization after performing "Reset Memory".

    Click here 2018 MY Camry HV [07/2017 - 09/2018]; BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: INITIALIZATION

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK AUXILIARY BATTERY

(a) Check the auxiliary battery voltage.

Standard Voltage:

Tester Connection

Condition

Specified Condition

Auxiliary battery

Power switch on (IG)

11 to 14 V

Auxiliary battery

Power switch on (READY)

11 to 15.5 V
NG

CHARGE OR REPLACE AUXILIARY BATTERY
OK

2.

CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

(a) Turn the power switch off.

*a

Front view of wire harness connector

(to Skid Control ECU (Brake Booster with Master Cylinder Assembly))

(b) Make sure that there is no looseness at the locking part and the connecting part of the connector.

OK:

The connector is securely connected.

(c) Disconnect the A40 skid control ECU (brake booster with master cylinder assembly) connector.

(d) Check both the connector case and the terminals for deformation and corrosion.

OK:

No deformation or corrosion.

(e) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A40-15 (+BI1) - Body ground

Always

11 to 14 V

A40-5 (+BI2) - Body ground

Always

11 to 14 V

A40-52 (BS) - Body ground

Always

11 to 14 V

A40-23 (IG1) - Body ground

Power switch on (IG)

11 to 14 V

A40-9 (IG2) - Body ground

Power switch on (IG)

11 to 14 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK

3.

RECONFIRM DTC

(a) Turn the power switch off.

(b) Reconnect the A40 skid control ECU (brake booster with master cylinder assembly) connector.

(c) Clear the DTCs.

Chassis > ABS/VSC/TRAC > Clear DTCs

(d) Turn the power switch off.

(e) Turn the power switch on (READY).

(f) Perform a road test.

(g) Check if the same DTC is output.

Chassis > ABS/VSC/TRAC > Trouble Codes

Result

Proceed to

DTC C1417 is not output.

A

DTC C1417 is output.

B
A

USE SIMULATION METHOD TO CHECK

B

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY