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2008 - MX-5 - Body and Accessories

POWER RETRACTABLE HARDTOP CONTROL MODULE INSPECTION

1. Remove the following parts:
a. Console (See CONSOLE REMOVAL/INSTALLATION.)
b. Quarter trim (See QUARTER TRIM REMOVAL/INSTALLATION.)
c. Scuff plate (SCUFF PLATE REMOVAL/INSTALLATION.)
d. Tire house trim (See TIRE HOUSE TRIM REMOVAL/INSTALLATION.)
e. Aeroboard (See AEROBOARD REMOVAL/INSTALLATION.)
f. Front seat back bar garnish (See SEAT BACK BAR GARNISH REMOVAL/INSTALLATION.)
g. Back trim (See BACK TRIM REMOVAL/INSTALLATION.)
2. Attach the tester lead to the power retractable hardtop control module wiring harness-side connector and inspect voltage, continuity, or resistance according to the standard (reference) on the table.

Standard (Reference)



Terminal

Signal

Connected to

Test condition

Standard

Inspection item

1A

Trunk lid opener relay output signal

Trunk lid opener relay

The deck panel is in the fully closed position.

B+

  • Deck panel limit switch

  • Trunk lid opener relay

  • Related wiring harness

The deck panel is not in the fully closed position.

1.0 or less

1B

1C

Power window input signal

Power window main switch

Under any condition: Inspect for continuity to power window main switch.

Continuity detected

  • Power window main switch

  • Related wiring harness

1D

Top lock input signal

Top lock switch

Ignition switch is turned to the ON position

When the top lock is locked.

1.0 or less

  • Top lock switch

  • Related wiring harness

When the top lock is unlocked.

B+

1E

Power window full-open request signal (Output)

Power window main switch

Under any condition: Inspect for continuity to power window main switch.

Continuity detected

  • Power window main switch

  • Related wiring harness

1F

Trunk lid latch switch signal

Trunk lid latch switch

When the trunk lid is open.

1.0 or less

  • Trunk lid latch switch

  • Related wiring harness

When the trunk lid is closed.

B+

1G

Hall effect sensor power supply

  • Roof Motor

  • Deck panel motor

Ignition switch is turned to the ON position

When the roof panel or deck panel is not moving.

1.0 or less

  • Roof Motor

  • Deck panel Motor

  • Related wiring harness

When the roof panel or deck panel is moving.

B+

1H

Input signal of the roof panel open/close switch

Power retractable hardtop switch

(hazard warning switch)

Ignition switch is turned to the ON position

Opening switch on

approx. 2.5

  • Power retractable hardtop switch

  • Related wiring harness

Closing switch on

approx. 3.4

Other

approx. 5.0

1I

Roof motor hall sensor input signal (RH)

Roof motor (RH)

When the roof is moving.

Pulse is output.

(See Inspection using an oscilloscope (reference).)

  • Roof motor (RH)

  • Related wiring harness

1J

Power supply

ROOM 15 A fuse

Under any condition

B+

  • ROOM 15 A fuse

  • Related wiring harness

1K

Deck panel motor hall sensor input signal (RH)

Deck panel motor (RH)

When the deck panel is moving.

Pulse is output.

(See Inspection using an oscilloscope (reference).)

  • Deck panel motor (RH)

  • Related wiring harness

1L

1M

Roof motor hall sensor input signal (LH)

Roof motor (LH)

When the roof is moving.

Pulse is output.

(See Inspection using an oscilloscope (reference).)

  • Roof motor (LH)

  • Related wiring harness

1N

1O

Deck panel motor hall sensor input signal (LH)

Deck panel motor (LH)

When the deck panel is moving.

Pulse is output.

(See Inspection using an oscilloscope (reference).)

  • Deck panel motor (LH)

  • Related wiring harness

1P

1Q

Hall effect sensor GND

GND

Under any condition: Inspect for continuity to GND.

Continuity detected

  • Related wiring harness

1R

Roof close position switch input signal

Power retractable hardtop limit switch

Ignition switch is turned to the ON position

When the roof panel is fully closed.

1.0 or less

  • Power retractable hardtop limit switch

  • Related wiring harness

When the roof panel is not fully closed.

B+

1S

CAN-H

Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.

  • Related wiring harnesses

1T

Roof open position switch input signal

Power retractable hardtop limit switch

Ignition switch is turned to the ON position

When the roof panel is fully open.

1.0 or less

  • Power retractable hardtop limit switch

  • Related wiring harness

When the roof panel is not fully open.

B+

1U

CAN-L

Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.

  • Related wiring harnesses

1V

Signal GND

Power retractable hardtop limit switch/deck panel limit switch

Ignition switch is turned to the ON position

Under any condition

1.0 or less

  • Related wiring harness

1W

Signal GND

GND

Under any condition: Inspect for continuity to GND.

Continuity detected

  • Related wiring harness

1X

IG1

ENGINE 15 A fuse

IG ON

B+

  • Related wiring harness

When the ignition switch is not in the ON position.

1.0 or less

2A

Power supply

Main fuse block

Under any condition

B+

  • Related wiring harness

2B

Power supply

Main fuse block

Under any condition

B+

  • Related wiring harness

2C

Indicator light output signal

Power retractable hardtop Indicator light

(hazard warning switch)

Ignition switch is turned to the ON position

Illuminated

1.0 or less

  • Hazard switch

  • Related wiring harness

Not illuminated

B+

2D

2E

Power GND

GND

Under any condition: Inspect for continuity to GND.

Continuity detected

  • Related wiring harness

2F

Power GND

GND

Under any condition: Inspect for continuity to GND.

Continuity detected

  • Related wiring harness

3A

Roof motor control (open)

Roof motor (RH)

Ignition switch is turned to the ON position

Roof panel open operation

B+

  • Roof motor (RH)

  • Related wiring harness

Roof panel close operation

1.0 or less*1

Other

approx. 2

3B

3C

3D

Roof motor control (close)

Roof motor (LH)

Ignition switch is turned to the ON position

Roof panel open operation

1.0 or less*1

  • Roof motor (LH)

  • Related wiring harness

Roof panel close operation

B+

Other

approx. 2

3E

Deck panel motor control (close)

Deck panel motor (RH)

Ignition switch is turned to the ON position

Deck panel open operation

1.0 or less*1

  • Deck panel motor (RH)

  • Related wiring harness

Deck panel close operation

B+

Other

approx. 2

3F

Deck panel open position sensor input signal

Deck panel limit switch

Ignition switch is turned to the ON position

When the deck panel is fully open.

1.0 or less

  • Deck panel limit switch

  • Related wiring harness

When the deck panel is not fully open.

B+

3G

3H

Deck panel motor control (open)

Deck panel motor (LH)

Ignition switch is turned to the ON position

Deck panel open operation

B+

  • Deck panel motor (LH)

  • Related wiring harness

Deck panel close operation

1.0 or less*1

Other

approx. 2

3I

Roof motor control (close)

Roof motor (RH)

Ignition switch is turned to the ON position

Roof panel open operation

1.0 or less*1

  • Roof motor (RH)

  • Related wiring harness

Roof panel close operation

B+

Other

approx. 2

3J

3K

3L

Roof motor control (open)

Roof motor (LH)

Ignition switch is turned to the ON position

Roof panel open operation

B+

  • Roof motor (LH)

  • Related wiring harness

Roof panel close operation

1.0 or less*1

Other

approx. 2

3M

Deck panel motor control (open)

Deck panel motor (RH)

Ignition switch is turned to the ON position

Deck panel open operation

B+

  • Deck panel motor (RH)

  • Related wiring harness

Deck panel close operation

1.0 or less*1

Other

approx. 2

3N

3O

Deck panel close position sensor input signal

Deck panel limit switch

Ignition switch is turned to the ON position

Except closed position

1.0 or less

  • Deck panel limit switch

  • Related wiring harness

Closed position

B+

3P

Deck panel motor control (close)

Deck panel motor (LH)

Ignition switch is turned to the ON position

Deck panel open operation

1.0 or less*1

  • Deck panel motor (LH)

  • Related wiring harness

Deck panel close operation

B+

Other

approx. 2


*1
The voltage increases during operation speed control of the roof and deck panel.
Inspection using an oscilloscope (reference)


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