Page 2293 of 3870

STEP 8. Replace the power transistor.
 
Q: Does the blower motor operate normally?
  
YES:
 It can be assumed that this malfunction is intermittent. Refer to 
HOW TO USE TROUBLESHOOTING/ INSPECTION SERVICE POINTS
 .  
NO:
 Replace the A/C-ECU. Check that the air conditioning works 
normally.  
INSPECTION PROCEDURE 7: THE A/C INDICATOR FLASHES TECHNICAL DESCRIPTION (COMMENT) If the A/C indicator flashes, inadequate refrigerant quantity, the ambient air 
temperature sensor circuit or the A/C pressure sensor circuit is suspected. TROUBLESHOOTING HINTS 
Malfunction of the A/C pressure sensor  Malfunction of the ambient air temperature sensor  Malfunction of the A/C-ECU  
DIAGNOSIS Required Special Tools:
  
MB991223: Test Harness Set  MB991958: Scan Tool (MUT-III Sub Assembly) 
MB991824: Vehicle Communication Interface (V.C.I.)  MB991827: MUT-III USB Cable  MB991910: MUT-III Main Harness A (Vehicles with CAN 
communication system)  
STEP 1. Using scan tool MB991958, read the diagnostic trouble code.
 
Check if an A/
C-ECU DTC is set.
 
2004 Mitsubishi Endeavor LS 
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor
   
     
        
        Page 2603 of 3870
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA
. 
2. Turn the ignition switch "ON" position.  
3. Read the diagnosis code.  
Q: Have any MFI system DTCs set?  
YES: Refer to DIAGNOSTIC TROUBLE CODE CHART
 .  
NO: Go to Step 4.  
STEP 4. Attempt to start the engine. 
Q: Does the engine start?  
YES: The procedure is complete (If no malfunctions are found in all steps, 
an intermittent malfunction is suspected. Refer to HOW TO COPE 
WITH INTERMITTENT MALFUNCTIONS
 ).  
NO: Refer to SYMPTOM CHART
 . If the malfunction is not resolved, 
replace the immobilizer-ECU. Then register the password (secret code) 
and encrypted code. (Refer to ON
-VEHICLE SERVICE
 .) The engine 
should now start.  
INSPECTION PROCEDURE 4: THE IMMOBILIZER INDICATOR LIGHT DOES NOT ILLUMINATE. < UP TO 
DECEMBER 2003 
> 
 
2004 Mitsubishi Endeavor LS 
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
   
     
        
        Page 2608 of 3870
Fig. 70: Connecting Terminal 1 To Ground
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
Q: Does only the immobilizer indicator light illuminate? (other indicator 
lights are in good condition)  
YES: Replace the immobilizer-ECU. Then register the password (secret 
code) and encrypted code ON
-VEHICLE SERVICE
 .  
NO: Go to Step 3.  
STEP 3. Check immobilizer-ECU connector C-310-1 and combination 
meter connector C-102 for loose, corroded or damaged terminals, or 
terminals pushed back in the connector.
 
2004 Mitsubishi Endeavor LS 
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
   
     
        
        Page 2623 of 3870
Q: Is the wiring harness between combination meter connector C-102 
(terminal 1) and the battery in good condition?  
YES: Go to Step 8.  
NO: Repair the wiring harness. Check to see that all meters operate.  
STEP 8. Retest the system. 
Q: Is the malfunction eliminated?  
YES: The procedure is complete. (If no malfunctions are found in all 
steps, an intermittent malfunction is suspected. Refer to HOW TO USE 
TROUBLESHOOTING/ INSPECTION SERVICE POINT
 ).  
NO: Go to Step 1.  
INSPECTION PROCEDURE 4: The Immobilizer Indicator Light does not Illuminate. < FROM TO JANUARY 2004 >  
2004 Mitsubishi Endeavor LS 
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
   
     
        
        Page 2628 of 3870
Fig. 84: Checking Connector C
-39 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
Q: Does only the immobilizer indicator light illuminate? (other indicator 
lights are in good condition)  
YES: Replace the immobilizer-ECU. Then register the password (secret 
code) and encrypted code ON
-VEHICLE SERVICE
 .  
NO: Go to Step 3.  
STEP 3. Check immobilizer-ECU connector C-39 and combination meter 
connector C-102 for loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
 
2004 Mitsubishi Endeavor LS 
2004 BODY & ACCESSORIES Ignition Switch - Endeavor
   
     
        
        Page 3700 of 3870
Fig. 63: Identifying Special Tools (2 Of 2)
 
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA. 
ON-VEHICLE SERVICE TCL INDICATOR LIGHT CHECK 1. Check that the "TCL OFF" indicator light and the TCL work indicator light 
illuminate for three seconds when the ignition switch is turned to the "ON" 
position. 
 
2004 Mitsubishi Endeavor LS 
2004 BRAKES Traction Control System (TCL) - Endeavor