Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012TDH
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 -           ]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1551; IG Power Supply Voltage; 2018 - 2024 MY Camry [03/2017 -        ]

DTC

C1551

IG Power Supply Voltage

DESCRIPTION

When a problem occurs in the power source circuit, the fail-safe function works to stop the power assist.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

C1551

IG Power Supply Voltage

When the PIG power supply voltage is normal, the IG power supply voltage is 18.5 V or higher
  • Harness or connector
  • Rack and pinion power steering gear assembly

EPS warning light: Comes on

The ECU judges the system has returned to normal

-

WIRING DIAGRAM

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.

    Click here 2018 - 2024 MY Camry [03/2017 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: CALIBRATION

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

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (BATTERY - RACK AND PINION POWER STEERING GEAR ASSEMBLY)

(a) Disconnect the C71 rack and pinion power steering gear assembly connector.

*a

Front view of wire harness connector

(to Rack and Pinion Power Steering Gear Assembly)

-

-

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

C71-4 (IG) - Body ground

Ignition switch ON

Below 18.5 V
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

2.

CHECK FOR DTC

(a) Clear the DTCs.

Chassis > EMPS > Clear DTCs

(b) Check for DTCs.

Chassis > EMPS > Trouble Codes

Result

Proceed to

DTC is output.

A

DTC is not output.

B
A

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY 2018 MY Camry [03/2017 - 06/2017]; STEERING GEAR / LINKAGE: STEERING GEAR: REMOVAL 2018 MY Camry [06/2017 - 08/2018]; STEERING GEAR / LINKAGE: STEERING GEAR: REMOVAL 2019 MY Camry [08/2018 - 09/2019]; STEERING GEAR / LINKAGE: STEERING GEAR: REMOVAL 2020 MY Camry [09/2019 - 03/2020]; STEERING GEAR / LINKAGE: STEERING GEAR: REMOVAL 2020 MY Camry [03/2020 - 10/2020]; STEERING GEAR / LINKAGE: STEERING GEAR: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR: REMOVAL

B

USE SIMULATION METHOD TO CHECK 2018 MY Camry [03/2017 - 06/2017]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2018 MY Camry [06/2017 - 08/2018]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2019 MY Camry [08/2018 - 09/2019]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [09/2019 - 03/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2020 MY Camry [03/2020 - 10/2020]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2021 MY Camry [10/2020 - 08/2021]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2022 - 2024 MY Camry [08/2021 -        ]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING