2008 - MX-5 - Body and Accessories
STEERING LOCK UNIT INSPECTION [ADVANCED KEYLESS SYSTEM]
1. Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.)
2. Measure the voltage at each terminal.
If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under “Inspection item(s)”.
If there is any malfunction, inspect the parts under “Inspection item(s)”.
If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the steering lock unit.
Terminal Voltage Table (Reference)
|
Terminal |
Signal name |
Connected to |
Measured condition |
Voltage (V) |
Inspection item(s) |
|
A |
Push switch signal |
Keyless control module |
Start knob pressed |
B+ |
|
|
Start knob released |
1.0 or less |
||||
|
B |
Power supply |
Fuse |
Under any condition |
B+ |
|
|
C |
Key reminder switch signal |
Keyless control module |
Key inserted |
B+ |
|
|
Key removed |
1.0 or less |
||||
|
D |
Power supply |
Fuse |
Under any condition |
B+ |
|
|
E |
Power supply |
Fuse |
Under any condition |
B+ |
|
|
F |
Ignition key illumination signal |
Ignition key illumination bulb |
Ignition switch off and driver-side door opened. |
1.0 or less |
|
|
30 s or more after driver-side door closed. |
B+ |
||||
|
G |
Serial communication |
Keyless control module |
Because this terminal is for communication good/no good judgment by terminal voltage is not possible. |
Related wiring harnesses |
|
|
H |
GND |
Body ground |
Because this terminal is for communication good/no good judgment by terminal voltage is not possible. |
Related wiring harnesses |
|
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