Vehicles With MMCS
Inspection Procedure 8:Voice guide "Unable to obtain vehicle speed. Please try again or contact your dealer for service"
is sent from the speaker. [Vehicles with MMCS]
CAUTION:
Before replacing the hands free module, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
TECHNICAL DESCRIPTION (COMMENT)
If the voice guide "Unable to obtain vehicle speed. Please try again or contact your dealer for service" is sent from the speaker, the vehicle speed signal of hands free module has a problem.
At this time, the hands free module, and the vehicle speed signal of multivision display may have a problem.
PROBABLE CAUSES
- The hands free module may be defective.
- The multivision display may be defective.
- Damaged harness wires and connectors
DIAGNOSIS
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicles Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Check the combination meter.
Check whether the speed meter works normally. (Refer to Speedometer Check.)
Q. Is the check result normal?
YES Go to Step 2.
NO Diagnose the combination meter (Refer to Combination meter - Troubleshooting Symptom Chart).
STEP 2. Check the multivision operation
check if the own vehicle mark is dislocated while driving.
Q. Is the check result normal?
YES Go to Step 3.
NO Diagnose the MMCS (Refer to Symptom Chart.)
STEP 3. Using scan tool MB991958, read the CAN box unit diagnostic trouble code.
(1)
CAUTION:
To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK"
(OFF) position before connecting or disconnecting scan tool MB991958.
Connect scan tool MB991958. Refer to "How to connect the Scan Tool (M.U.T.-III) Reading and Clearing Diagnostic Trouble Codes."
(2)Turn the ignition switch to the "ON" position.
(3)Check if DTC is set.
(4)Turn the ignition switch to the "LOCK" (OFF) position.
Q. Is the DTC set?
YES Troubleshoot the MMCS (Refer to Diagnostic Trouble Code Chart Mitsubishi Multi Communication System (MMCS)).
NO Go to Step 4.
STEP 4. Check the diagnosis mode
Check if the hands free module can be switched to the diagnosis mode.(Refer to Diagnosis Mode [Vehicles With MMCS].)
Q. Is the check result normal?
YES Go to Step 5.
NO Perform Inspection Procedure 6: "DIAGNOSIS MODE cannot be made an entry. Mobile Phone item is not displayed on the INFOR screen of MMCS." (Refer to Inspection Procedure 6 [Vehicles With MMCS].)
STEP 5. Replace the hands free module temporarily, and check the trouble symptom.
Q. Is the check result normal?
YES Replace the hands free module.
NO Replace the multivision display.