Inspection Procedure 1: Check the battery power supply circuit to the laser radar.


PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Resistance measurement at the laser radar connector (E terminal).
(1)Disconnect the connector, and measure the resistance at the harness.
(2)Measure the resistance between the laser radar connector (E terminal) and body earth.
OK: Connect (2 Ω or lower)

Q. Is the check result normal?
Go to Step 3.
Go to Step 2.

STEP 2. Disconnection check of the GND line between the laser radar connector and body earth.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction).
Repair the connector(s) or wiring harness.

STEP 3. Voltage measurement at the laser radar connector (IG terminal).
(1)Disconnect the connector, and measure the resistance at the harness.
(2)Turn the ignition switch to the "ON" position.
(3)Measure the voltage between the laser radar connector (IG terminal) and body earth.
OK: Battery voltage

Q. Is the check result normal?
Go to Step 5.
Go to Step 4.

STEP 4. Disconnection check of the IG line between the laser radar connector and ignition switch.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction).
Repair the connector(s) or wiring harness.

STEP 5. Check the trouble symptom.
Check that this system can communicate with the M.U.T.-III.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction).
Replace the laser radar (Refer to ).