Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: PIG Power Supply Voltage (C1552,C1554)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Steering / Power Assist Systems / Power Steering System(for Hv Model) / PIG Power Supply Voltage (C1552,C1554)

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

Power switch is turned 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

Power switch is turned 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

  • 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

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    IG Power Supply Voltage (C1551)

    Error in Matching of ECUs (C1567)

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