RM38N0EC _55 Steering _111819 POWER ASSIST SYSTEMS _0501137 POWER STEERING SYSTEM C

POWER ASSIST SYSTEMS POWER STEERING SYSTEM C155A16 Power Steering Motor "A" Supply Voltage Circuit Voltage Below Threshold C155A17 Power Steering Motor "A" Supply Voltage Circuit Voltage Above Threshold C155B16 Power Steering Motor "B" Supply Voltage Circuit Voltage Below Threshold C155B17 Power Steering Motor "B" Supply Voltage Circuit Voltage Above Threshold

DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	DTC Output from	Priority
C155A16	Power Steering Motor "A" Supply Voltage Circuit Voltage Below Threshold	PIG voltage of system 1 is lower than the standard value	· Harness or connector · Rack and pinion power steering gear assembly	EPS warning light: Comes on	EMPS	A
C155A17	Power Steering Motor "A" Supply Voltage Circuit Voltage Above Threshold	PIG voltage of system 1 is higher than the standard value	· Harness or connector · Rack and pinion power steering gear assembly	EPS warning light: Comes on	EMPS	A
C155B16	Power Steering Motor "B" Supply Voltage Circuit Voltage Below Threshold	PIG voltage of system 2 is lower than the standard value	· Harness or connector · Rack and pinion power steering gear assembly	EPS warning light: Comes on	EMPS	A
C155B17	Power Steering Motor "B" Supply Voltage Circuit Voltage Above Threshold	PIG voltage of system 2 is higher than the standard value	· Harness or connector · Rack and pinion power steering gear assembly	EPS warning light: Comes on	EMPS	A

WIRING DIAGRAM

1.448,0.708 2.813,1.021 1.365,0.313 10 false from Auxiliary Battery 3.823,0.896 4.479,1.115 0.656,0.219 10 false EPS 5.438,0.615 6.052,0.833 0.615,0.219 10 false 8 5.688,0.708 6.302,0.927 0.615,0.219 10 false PIG 5.667,1.917 6.281,2.135 0.615,0.219 10 false PGND 5.438,1.802 6.052,2.021 0.615,0.219 10 false 7 4.76,2.854 5.458,3.073 0.698,0.219 10 false C37 4.75,3.021 7.156,3.542 2.406,0.521 10 false Power Steering ECU (Rack and Pinion Power Steering Gear Assembly)

CAUTION / NOTICE / HINT

NOTICE:: ·

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

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (PIG POWER SOURCE)

Pre-procedure1

Disconnect the C37 rack and pinion power steering gear assembly connector.

Procedure1

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

Standard Voltage:

Tester Connection	Condition	Specified Condition
Click Location & Routing(C37)Location & Routingewd_type=routing;type=c;code=C37 Click Connector(C37)Engine Compartment>Engine Wire>Power Steering ECU with Motor Assembly (Rack and Pinion Power Steering Gear Assembly)ewd_type=component;type=c;code=C37;pinno=8
C37-8 (PIG) - Body ground	Ignition switch off	11 to 14 V

Tester Connection

Condition

Specified Condition

Click Location & Routing(C37)Location & Routingewd_type=routing;type=c;code=C37

Click Connector(C37)Engine Compartment>Engine Wire>Power Steering ECU with Motor Assembly (Rack and Pinion Power Steering Gear Assembly)ewd_type=component;type=c;code=C37;pinno=8

C37-8 (PIG) - Body ground

Ignition switch off

11 to 14 V

Procedure2

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
Click Location & Routing(C37)Location & Routingewd_type=routing;type=c;code=C37 Click Connector(C37)Engine Compartment>Engine Wire>Power Steering ECU with Motor Assembly (Rack and Pinion Power Steering Gear Assembly)ewd_type=component;type=c;code=C37;pinno=7
C37-7 (PGND) - Body ground	Always	Below 1 Ω

Tester Connection

Condition

Specified Condition

Click Location & Routing(C37)Location & Routingewd_type=routing;type=c;code=C37

Click Connector(C37)Engine Compartment>Engine Wire>Power Steering ECU with Motor Assembly (Rack and Pinion Power Steering Gear Assembly)ewd_type=component;type=c;code=C37;pinno=7

C37-7 (PGND) - Body ground

Always

Below 1 Ω

Result:

Proceed to
OK
NG

Post-procedure1

None

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY

Click hereSteering>STEERING GEAR / LINKAGE>STEERING GEAR>REMOVAL202111,202203,_55,_111821,_0503296,RM100000001ZE38,202203,202303,_55,_111821,_0503296,RM1000000022F7U,202303,202406,_55,_111821,_0503296,RM100000002B2NK,202406,202409,_55,_111821,_0503296,RM100000002MQ5G,202409,999999,_55,_111821,_0503296,RM100000002OMWM,

REPAIR OR REPLACE HARNESS OR CONNECTOR