Step 22: Check Each Equipment
Disconnect RV meter connector D-07, auto-cruise control-ECU connector D-12 and combination meter connector D-03 in that order one by one. Then check that MFI system DTC P0500 does not reset under any conditions.
CAUTION:
To prevent damage to scan tool MB991502 or MB991958, always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502 or MB991958.
- Connect scan tool MB991502 or MB991958 to the data link connector.
- Turn the ignition switch to "ON" position.
- Read the MFI system diagnostic trouble code.
Does MFI system DTC P0500 reset when one of RV meter connector D-07, auto-cruise control-ECU or combination meter, powertrain control module is disconnected?
- YES
Go to step 23 . - NO
Replace the RV meter or auto-cruise control-ECU, combination meter or powertrain control module where applicable. The speedometer should work normally.