RADAR UNIT INSPECTION

id152000004700

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

2.  Remove the front bumper. (See FRONT BUMPER REMOVAL.) (See FRONT BUMPER INSTALLATION.)

3.  Remove the radar unit. (See RADAR UNIT REMOVAL/INSTALLATION.)

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

5.  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).
?  If the system does not operate normally even though the inspection items are normal, replace the radar unit. (See RADAR UNIT REMOVAL/INSTALLATION.)


Terminal Voltage Table (Reference)

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Terminal

Signal name

Connected to

Measurement condition

Voltage (V)

Inspection item (s)
A
—
—
—
—
—
B
GND
Body ground
Under any condition
1.0 or less
Related wiring harness
C
CAN_L
CAN related module
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
—
D
CAN_H
CAN related module
Because this terminal is for communication, good/no good judgment by terminal voltage is not possible.
—
E
IG1
•  IG1 relay
•  C/U IG1 15 A fuse
Switch the ignition ON (engine off or on)
B+
•  IG1 relay
•  C/U IG1 15 A fuse
•  Related wiring harness
Switch the ignition off (LOCK)
1.0 or less