Inspection Procedure 4: Check the power supply and ground circuit to the receiver antenna: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools:

MB991223: Harness Set
MB992006: Extra Fine Probe

STEP 1. Voltage measurement at the receiver antenna connector (5V line).
1. Disconnect the connector and measure the resistance at the wiring harness side.
2. Measure the voltage between the receiver antenna connector (5V line) and ground.
  OK: The voltage should measure approximately 12 volts (battery positive voltage).
Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Go to Step 2.
STEP 2. Check of open circuit in 5V line between receiver antenna connector and ETACS-ECU connector.
Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Repair the connector(s) wiring harness.
STEP 3. Resistance measurement at the receiver antenna connector (GND line).
1. Disconnect the connector and measure the resistance at the wiring harness side.
2. Measure the resistance between the receiver antenna connector (GND line) and ground.
  OK: The resistance should be 2 ohms or less
Q: Is the check result normal?
1. YES: The diagnosis is complete.
2. NO: Go to Step 4.
STEP 4. Check of short to ground, and open circuit in GND line between receiver antenna connector and ETACS-ECU connector.
Q: Is the check result normal?
1. YES: The diagnosis is complete.
2. NO: Repair the connector(s) and wiring harness.