Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B1W0
Model Year Start: 2019 Model: Avalon Prod Date Range: [04/2018 -           ]
Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): C1552,C1554; PIG Power Supply Voltage; 2019 - 2022 MY Avalon [04/2018 -        ]

DTC

C1552

PIG Power Supply Voltage

DTC

C1554

Power Supply Relay Failure

DESCRIPTION

When a malfunction is detected in the PIG power source and power supply relay system, the fail-safe function suspends power assist.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Warning Indicate

Return-to-normal Condition

Note

C1552

PIG Power Supply Voltage

PIG power source circuit malfunction
  • EPS fuse
  • Harness or connector
  • Rack and pinion power steering gear assembly

EPS warning light: Comes on

Engine switch on (IG) again

-

C1554

Power Supply Relay Failure

Power source relay circuit malfunction
  • EPS fuse
  • Harness or connector
  • Rack and pinion power steering gear assembly

EPS warning light: Comes on

Engine switch on (IG) again

-

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 2019 - 2022 MY Avalon [04/2018 -        ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Gasoline Model): CALIBRATION

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

PROCEDURE

1.

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

(a) Disconnect the C67 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

C67-8 (PIG) - Body ground

Always

9 to 16 V

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

C67-7 (PGND) - Body ground

Always

Below 1 Ω
OK

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY 2019 - 2020 MY Avalon [04/2018 - 08/2020]; STEERING GEAR / LINKAGE: STEERING GEAR (for Gasoline Model): REMOVAL 2021 MY Avalon [08/2020 - 08/2021]; STEERING GEAR / LINKAGE: STEERING GEAR (for Gasoline Model): REMOVAL 2022 MY Avalon [08/2021 -        ]; STEERING GEAR / LINKAGE: STEERING GEAR (for Gasoline Model): REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR