California Air Tools 3010 Service Manual Page 388

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15-40 STEERING
EPS (Electric Power Steering) System
If the reading is in specification, disconnect the EPS ECU
connectors and check the wiring for continuity between
main harness connectors.
Special Tool - Hand Tester: 57001-1394
Wiring Continuity Inspection
EPS ECU Connector [A] ←→
EPS Torque Sensor Connector [B]
Y/BK Lead [C]
Y/R Lead [D]
BK/BL Lead [E]
If the wiring is good, check the power supply voltage (see
EPS ECU Power Supply Voltage Inspection).
If the power supply v oltage is good, erase the service
code with the service code erase mode and enter the self
-diagnosis mode again.
If the service code 51 appears again, replace the EPS
ECU (see EPS ECU Removal/Installation).
If the service code 51 disappears, it is a temporary failure.
EPS Motor Inspection (Service C ode 61)
Remove the front cargo compartment (see Front Cargo
Compartment in the Frame chapter).
TurnthemainswitchOFF.
Disconnect the EPS motor connector [A].
Set the hand tester to the × 1 range and connect it to
the EPS motor connector [A].
Special Tool - Hand Tester: 57001-1394
Measure the EPS motor resistance.
EPS Motor Resistance Inspection
Connections: R Lead [B] ←→ BK Lead [C]
Standard: Any Reading Resistance (reference 0.15
0.19 at 20°C (68°F))
If the reading is infinity () , replace the EPS unit (see
EPS Unit Removal/Installation).
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