Inspection Procedure 14: Outer tone alarm does not sound: 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.

STEP 1. Using scan tool (M.U.T.-III), read the diagnostic trouble code.
Check if any DTC is stored in the KOS-ECU.

CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
2. Turn the power supply mode of the engine switch to ON.
3. Check if DTC is stored.
4. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Refer to DIAGNOSTIC TROUBLE CODE CHART .
2. NO: Go to Step 2.
STEP 2. Check the customization
Check that either of the followings other than "Not sound tone alarm" is set for "Tone alarm answer back" with the customization function.
- At F.A.S.T.
- At keyless
- At Both
Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Set either of the followings other than "Tone alarm answer back" with the customization function (Refer to CUSTOMIZATION FUNCTION ).
STEP 3. Using scan tool (M.U.T.-III), read the actuator test.
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
2. Turn the power supply mode of the engine switch to ON.
3. Check that the outer tone alarm sounds (Refer to TROUBLE SYMPTOM CHART ).
4. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Go to Step 5.
2. NO: Replace the outer tone alarm. Go to Step 4.
STEP 4. Check of short to power supply, short to ground, and open circuit in DRVB, PWRB line between the KOS-ECU connector and the outer tone alarm connector.
NOTE: Before the wiring harness check, check the intermediate connector, and repair if necessary.

Q: Is the check result normal?
1. YES: Go to Step 5.
2. NO: Repair the wiring harness.
STEP 5. Check of the troubles
Check that the outer tone alarm sounds when the outer tone alarm sounding conditions are met.

Q: Is the check result normal?
1. YES: Intermittent malfunction is suspected (Refer to HOW TO DEAL WITH INTERMITTENT MALFUNCTION ).
2. NO: Replace KOS-ECU and register the ID codes (Refer to ON-VEHICLE SERVICE < KOS-ECU > ).