EPS CONTROL MODULE INSPECTION


BHE061367880W02

1. Remove the engine cover, battery cover, and PCM cover.

2. Remove the PCM and the EPS control module. (See EPS CONTROL MODULE REMOVAL/INSTALLATION.)

3. Connect the PCM and EPS control module connectors.

4. Attach the tester lead to the underside of the control module connector and inspect the voltage and continuity according to the Terminal Voltage Table (Reference) indicated in the table.

Note
• When inspecting the torque sensor and EPS motor for continuity, turn the ignition switch off and inspect with the connectors for the EPS control module, torque sensor, and EPS motor disconnected.

Terminal Voltage Table (Reference)

Terminal

Signal name

Connected to

Measured item

Measured terminal (measured condition)

Standard

Inspection item(s)

1A
Battery power supply
Battery
Voltage
Under any condition
B+
• Wiring harness (1A-battery)
• Fuse (60 A)
1B
Ground
Ground point
Voltage
Under any condition
1 V or less
• Wiring harness (1B-ground point)
2A
Ground
Ground point
Voltage
Under any condition
1 V or less
• Wiring harness (2A-ground point)
2B
-
-
-
-
-
-
2C
-
-
-
-
-
-
2D
-
-
-
-
-
-
2E
-
-
-
-
-
-
2F
-
-
-
-
-
-
2H
-
-
-
-
-
-
2J
-
-
-
-
-
-
2K
CAN-L
-
Inspect under DTC inspection.
-
2L
-
-
-
-
-
-
2M
CAN-H
-
Inspect under DTC inspection.
-
2N
-
-
-
-
-
-
2O
Ground
Ground point
Voltage
Under any condition
1 V or less
• Wiring harness (2O-ground point)
2P
Ignition power supply
Ignition switch
Voltage
Ignition switch is ON
B+
• Wiring harness (2P-ignition switch-battery)
• Fuse (15 A)
Ignition switch is OFF
1 or less
3A
Torque sensor
(Signal 2)
Torque sensor
Continuity
Terminal 3A-torque sensor terminal A
Continuity detected
• Wiring harness (3A-torque sensor A)
3B
Torque sensor
(Drive signal)
Torque sensor
Continuity
Terminal 3B-torque sensor terminal B
Continuity detected
• Wiring harness (3B-torque sensor B)
3C
Torque sensor
(Signal 1)
Torque sensor
Continuity
Terminal 3C-torque sensor terminal C
Continuity detected
• Wiring harness (3C-torque sensor C)
4A
EPS motor
EPS motor
Continuity
Terminal 4A-EPS motor terminal A
Continuity detected
• Wiring harness (4A-EPS motor A)
4B
EPS motor
EPS motor
Continuity
Terminal 4B-EPS motor terminal B
Continuity detected
• Wiring harness (4B-EPS motor B)