RM35X0E _55 Steering _078944 POWER ASSIST SYSTEMS _0382923 POWER STEERING SYSTEM(w/ Variable Flow Control Solenoid Valve) J

POWER ASSIST SYSTEMS  POWER STEERING SYSTEM(w/ Variable Flow Control Solenoid Valve)  Power Steering Warning Light Circuit  


DESCRIPTION

The power steering ECU assembly is connected to the combination meter via CAN communication. If the power steering ECU assembly detects a malfunction, the power steering warning light comes on. At this time, the vehicle enters fail-safe mode.

WIRING DIAGRAM

C411188E01
1.969,1.927 3.135,2.177 1.167,0.25 10 false from IG Circuit 3.917,2.073 5.177,2.313 1.26,0.24 10 false ECU-IG1 NO. 3 0.531,3.938 2.417,4.146 1.885,0.208 10 false Combination Meter Assembly 0.948,4.417 2.875,4.625 1.927,0.208 10 false : CAN Communication System 5.656,3.781 6.042,3.969 0.385,0.188 10 false N36 5.667,4 6.958,4.417 1.292,0.417 10 false Power Steering ECU Assembly 5.76,2.917 6.146,3.104 0.385,0.188 10 false GND 5.76,1.927 6.146,2.115 0.385,0.188 10 false IG 5.563,1.802 5.688,1.99 0.125,0.188 10 false 5 5.563,2.792 5.688,2.979 0.125,0.188 10 false 3 0.542,3.792 0.927,3.979 0.385,0.188 10 false N22

CAUTION / NOTICE / HINT

NOTICE:

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


PROCEDURE

2.CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BATTERY AND BODY GROUND)
a.

Disconnect the power steering ECU assembly connector.


b.
C411187C01
1.479,0.24 1.917,0.5 0.438,0.26 1.448,1.365 1.094,1.698 true 1.823,1.365 2.177,1.698 true 0.063,0.021 0.26,0.177 0.198,0.156 10 false *a 2.125,1.729 2.365,1.896 0.24,0.167 10 false IG 0.906,1.729 1.292,1.875 0.385,0.146 10 false GND 1.552,0.292 1.958,0.5 0.406,0.208 10 false N36
*a Front view of wire harness connector
(to Power Steering ECU Assembly)


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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N36-5 (IG) - Body ground Ignition switch ON 11 to 14 V



c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N36-3 (GND) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

3.PERFORM ACTIVE TEST USING GTS (METER/GAUGE SYSTEM)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.PERFORM ACTIVE TEST USING GTS (METER/GAUGE SYSTEM)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON and turn the GTS on.


c.

Perform the Active Test of the combination meter using GTS.

Body Electrical > Combination Meter > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
PPS Warning Power steering warning light OFF or ON Perform the test with the vehicle stopped and the engine idling.
Body Electrical > Combination Meter > Active Test
Tester Display
PPS Warning
50004 409 129

d.

Check that the power steering warning light operates in accordance with the Active Test.

HINT:

Reconnect the connectors and restore the vehicle to its previous condition before checking the combination meter.


OK:

The power steering warning light turns on and off in accordance with GTS operation.



Result:
Proceed to
OK
NG



OK

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY

Click hereSteering>STEERING GEAR / LINKAGE>STEERING GEAR (for RHD)>REMOVAL


NG

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING