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Inspection procedure 22: In running, The ECO mode indicator shows nothing <Vehicles with ECO mode indicator>
 
 
 
 
COMMENT
  • Under a good driving conditions of fuel consumption, the ECM shows ECO mode indicator through the CAN.
  • If the ECM does not show ECO mode indicator no matter how the vehicle runs, the possible causes are a abnormal combination meter, also abnormal communication between the ECM and the combination meter.
 
 
TROUBLESHOOTING HINTS (The most likely causes for this case: )
  • ECO mode indicator failed.
  • Open or shorted combination meter circuit.
 
 
DIAGNOSIS
Required Special Tools:
  • MB992744: Vehicle communication interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite main harness A
  • MB992747: V.C.I.-Lite USB cable short
  • MB992748: V.C.I.-Lite USB cable long
  • 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. Using scan tool (M.U.T.-III), read the diagnostic trouble code (DTC).
cautionTo prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (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 THE SCAN TOOL (M.U.T.-III) .
(2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is any DTC stored?
Refer to Diagnostic Trouble Code Chart .
Go to Step 2.
 
STEP 2. Check the trouble symptoms.
Does the trouble symptom persist?
Check the combination meter system. Refer to GROUP 54A, Combination Meter - Trouble Symptom Chart .
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .