INDICATOR UNIT INSPECTION

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Terminal Voltage Inspection

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the sensor cover. (See SENSOR COVER REMOVAL/INSTALLATION.)

3.  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

4.  Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).

•  If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s) and related wiring harnesses.
―  If the system does not work normally even though the inspection items or related wiring harnesses do not have any malfunction, replace the indicator unit. (See INDICATOR UNIT REMOVAL/INSTALLATION.)

Terminal Voltage Table (Reference)

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Terminal

Signal name

Connected to

Measurement conditions

Voltage (V)

Inspection item(s)
A
Power supply (IG1)
IG1 relay No.1
Ignition switch ON (engine off or on)
B+
•  METER1 10A fuse
•  IG1 relay No.1
Ignition switch off or ACC
1.0 or less
B
Power supply
•  INTERIOR1 15 A fuse
•  ROOM 25 A fuse
Under any condition
B+
•  INTERIOR1 15 A fuse
•  ROOM 25 A fuse
•  Battery
C
Power supply (IG1)
Ignition relay (IG1_STAB)*1
Ignition switch ON (engine off or on)
B+
•  Ignition relay (IG1_STAB)
Ignition switch off or ACC
1.0 or less
IG1 relay No.2*2
Ignition switch ON (engine off or on)
B+
•  C/U IG1 15A fuse
•  IG1 relay No.2
Ignition switch off or ACC
1.0 or less
D
—
—
—
—
—
E*1
Passenger air bag deactivation (PAD) ON indicator
Instrument cluster
Ignition switched ON (engine off)
Turn PAD switch on (PAD ON indicator light turns off) and light switch at OFF position
1.0 or less
Instrument cluster
Turn PAD switch on (PAD ON indicator light turns off) and light switch at TNS position
approx. 11
Turn PAD switch off (PAD ON indicator light turns on)
approx. 4
F
Ground
Body ground
Under any condition
1.0 or less
Body ground
G
Instrument cluster signal
Instrument cluster
Because this terminal is for communication, determination using terminal voltage inspection is not possible.
H*3
Passenger air bag deactivation (PAD) OFF indicator
Instrument cluster
Ignition switched ON (engine off)
Turn PAD switch on, approx. 60 s (during PAD OFF indicator illumination)
approx. 11
Instrument cluster
Turn PAD switch off (PAD OFF indicator light turns off) and light switch at OFF position
approx. 4
Turn PAD switch off (PAD OFF indicator light turns off) and light switch at TNS position
1.0 or less
I
—
—
—
—
—
J
—
—
—
—
—

*1  :With i-stop system
*2  :Without i-stop system
*3  :With passenger air bag deactivation (PAD) switch


LED Illumination Inspection


When using M-MDS

1.  Connect the M-MDS to the DLC-2.

2.  After vehicle identification, select the following from the M-MDS initialization screen.

1.  "Data logger"
2.  "Module"
3.  "IC"

3.  Using the simulation function LCD_SEG, verify that the following warning/indicator lights are turned on.

•  If any one of the warning/indicator lights is not displayed, replace the indicator unit. (See INDICATOR UNIT REMOVAL/INSTALLATION.)
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When not using M-MDS

1.  Switch the ignition ON (engine off or on).

2.  Using a jumper wire, connect indicator unit terminal G and body ground for 5 s or more.

Caution
•  If the terminals are mistakenly connected, vehicle damage or fire could occur. When connecting with the jumper wire, thoroughly verify what terminals are being connected to prevent a miss-connection.

3.  Verify that the following warning/indicator lights are turned on.

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•  If any one of the warning/indicator lights is not displayed, replace the indicator unit. (See INDICATOR UNIT REMOVAL/INSTALLATION.)