Steering

Electro Hydraulic Power Assist Steering (EHPAS) Control Module Inspection

~1min read
Terminal Voltage Table (Reference)


Terminal

Signal name

Connected to

Measured item

Measured terminal (measured condition)

Standard

Inspection item(s)

1A

Ground

Ground point

Voltage

Under any condition

1 V or less

  • Wiring harness (1A—ground point)

1B

Battery power supply

Battery

Voltage

Under any condition

B+

  • Wiring harness (1B—battery)

  • Fuse (EHPAS 80A)

2A

—

—

—

—

—

—

2B

CAN_L

—

Inspect under DTC inspection.

—

2C

—

—

—

—

—

—

2D

CAN_H

—

Inspect under DTC inspection.

—

2E

—

—

—

—

—

—

2F

Ignition power supply

Ignition switch or IG1 relay

Voltage

Switch the ignition to ON

B+

  • Wiring harness (2F—ignition switch or IG1 relay—battery)

  • Fuse (ABS IG 7.5A)

Switch the ignition to off

1 V or less

Test yourself

A quick Mazda 3 quiz: every answer comes with an explanation and a link to the manual page.