MIL ILLUMINATION - P0606

Applicable Models

Related Category/Subcategory/Symptoms

ENGINE / FUEL / DOES NOT TURN OFF/WARNING LIGHT
ENGINE / FUEL / IMPROPER OPERATION

MTOL - 4450 Dealer Repair Information

Symptom and Conditions

Some vehicles may have a Malfunction Indicator Lamp (MIL) illuminated 
and DTC P0606 stored in the Powertrain Control Module (PCM).          
                                                                      
Note:  There could also be possibility of slow battery drainage.      

Repair Procedure

1.  Check if output of the MAIN RELAY stays ON, after turning ignition  
    switch to the LOCK position for 15 minutes or longer.               
2.  If confirmed, check if voltage at IG1 is less than 0.1V.            
    (a) If more than 0.1V, check related parts in the circuit by        
        removing one at a time.  Replace the necessary part(s).         
    (b) If less than 0.1V, refer to Workshop manual page 01-02-159 for  
        normal diagnostics.                                             
                                                                        
Special Note:  In past cases, the Passenger Junction Box (PJB) was found
to cause excess voltage.  The PJB contains the meter fuse which powers  
the immobilizer coil, instrument cluster, wiper relays, and shift       
interlock relay.  They are not serviced separately.  If needed, the PJB 
may require replacement.  Be sure to perform PMI if PJB is replaced.