California Air Tools 3010 Service Manual Page 386

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15-38 STEERING
EPS (Electric Power Steering) System
CPU (Central Processing Unit) Inspection (Service
Code 35)
The CPU is built in the EPS ECU [A]. So, the CPU itself
can not be inspected.
Check the power supply voltage (see EPS ECU Power
Supply Voltage Inspection).
If the power supply voltage is good, but the problem still
exists, replace the EPS ECU (see EPS ECU Removal/In-
stallation).
Direction Distinction Circuit Inspection (Service
Code 36)
The direction distinction circuit is built in the EPS ECU
[A]. So, the direction distinction circuit itself can not be
inspected.
TurnthemainswitchOFF.
Disconnect the EPS ECU and EPS motor connectors.
Check the wiring for continuity between main harness
connectors.
Special Tool - Hand Tester: 57001-1394
Wiring Continuity Inspection
EPS ECU Connector [A] ←→
EPS Motor Connector [B]
R Lead Terminal [C]
BK Lead Terminal [D]
If the wiring is good, check the power supply voltage (see
EPS ECU Power Supply Voltage Inspection).
If the power supply voltage is good, but the problem still
exists, replace the EPS ECU (see EPS ECU Removal/In-
stallation).
Boosting Transformer Circuit Inspection (Service
Code 37)
The boosting transformer circuit is built in the EPS ECU
[A]. So, the boosting transformer circuit itself can not be
inspected.
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