RM36D0EC _55 Steering _083083 POWER ASSIST SYSTEMS _0403821 POWER STEERING SYSTEM C

POWER ASSIST SYSTEMS  POWER STEERING SYSTEM  C123A17  Supply Voltage Circuit Circuit Voltage Above Threshold  


DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate
C123A17 Supply Voltage Circuit Circuit Voltage Above Threshold IG voltage is higher than the standard value
·

Harness or connector

·

Rack and pinion power steering gear assembly


EPS warning light: Comes on

WIRING DIAGRAM

for HV Model:
C375258E37
1.406,0.719 3.396,1.083 1.99,0.365 10 false from IGR NO. 2 Relay 4.083,0.896 4.813,1.146 0.729,0.25 10 false EPS-IGR 5.052,0.615 5.667,0.833 0.615,0.219 10 false 4 5.688,0.708 6.302,0.927 0.615,0.219 10 false IG 5.677,1.427 6.292,1.646 0.615,0.219 10 false PGND 5.052,1.333 5.667,1.552 0.615,0.219 10 false 7 3.969,2.344 4.667,2.563 0.698,0.219 10 false C54 3.979,2.615 7.125,2.938 3.146,0.323 10 false Rack and Pinion Power Steering Gear Assembly 5.271,2.052 6.615,2.313 1.344,0.26 10 false Power Steering ECU

for Gasoline Model:
C530648E02
1.958,0.667 3.073,1.031 1.115,0.365 10 false from Engine Stop and Start ECU 5.052,0.615 5.667,0.833 0.615,0.219 10 false 4 5.688,0.708 6.302,0.927 0.615,0.219 10 false IG 5.677,1.427 6.292,1.646 0.615,0.219 10 false PGND 5.052,1.333 5.667,1.552 0.615,0.219 10 false 7 3.969,2.344 4.667,2.563 0.698,0.219 10 false C54 3.979,2.615 7.125,2.938 3.146,0.323 10 false Rack and Pinion Power Steering Gear Assembly 5.271,2.052 6.615,2.313 1.344,0.26 10 false Power Steering ECU

CAUTION / NOTICE / HINT

NOTICE:
·

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

·

When replacing the rack and pinion power steering gear assembly, perform Power Steering ECU Initial Setting.

Click hereSteering>POWER ASSIST SYSTEMS>POWER STEERING SYSTEM>UTILITY



PROCEDURE

1.CHECK HARNESS AND CONNECTOR (IG POWER SOURCE)
a.

Disconnect the C54 rack and pinion power steering gear assembly connector.

C376308C24
3.417,0.104 3.729,0.313 0.313,0.208 1.833,0.333 2,0.333 2,0.333 3.49,1.063 true 3.458,0.135 3.771,0.333 0.313,0.198 10 false C54 1.635,0.271 1.948,0.469 0.313,0.198 10 false IG 0.167,0.125 0.479,0.323 0.313,0.198 10 false *a
*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
C54-4 (IG) - Body ground Ignition switch ON 9 to 16 V



Result:
Proceed to
OK
NG



OK

2.CLEAR DTC

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

2.CLEAR DTC
a.

Clear the DTCs.

Chassis > EMPS > Clear DTCs
50002 405

b.

Turn the ignition switch off.


Result:
Proceed to
NEXT



NEXT

3.CHECK FOR DTC
3.CHECK FOR DTC
a.

Check for DTCs.

Chassis > EMPS > Trouble Codes
50001 405

Result:
Result Proceed to
DTC is output. A
DTC is not output. B



A

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY

Click hereSteering>STEERING GEAR / LINKAGE>STEERING GEAR>REMOVAL


B

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING