| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B5KT |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - ] |
| Title: POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): C1552,C1554; PIG Power Supply Voltage; 2019 - 2022 MY Avalon HV [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 warning light: Comes on |
Power switch is turned on (IG) again |
- |
|
C1554 |
Power Supply Relay Failure |
Power source relay circuit malfunction |
|
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.
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![2019 - 2022 MY Avalon HV [04/2018 - ]; POWER ASSIST SYSTEMS: POWER STEERING SYSTEM(for HV Model): CALIBRATION](/t3Portal/stylegraphics/info.gif)
- 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 |
|
|