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Home >> Mercedes Benz >> 2000 >> ML430 >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Anti-Theft & Central Locking System -- 163 Chassis >> Self-Diagnostic System >> Central locking (CL) diagnosis troubleshooting - AD80.20-P-5001GH

Central locking (CL) diagnosis troubleshooting - AD80.20-P-5001GH

MODEL 163 

REFER TO BASIC KNOWLEDGE Central locking, location of components   GF80.20-P-0005-01GH 
INSPECT Fuses in order    
  AAM voltage supply in order   AD54.21-P-6000-01GH
  Radio frequency remote control/electric central locking (RFL) in order   AD80.35-P-1001GHZ 
IMPORTANT All doors closed    
  Troubleshooting     
Complaint  Possible cause  Notes  Remedy/Test step 
Central locking completely inoperative All-Activity Module (AAM) (N10) AAM fault memory AD54.21-P-4000GH
Central locking cannot be operated with the radio frequency remote control (transmitter key) Radio frequency remote control/electric central locking (RFL)
All-Activity Module (AAM) (N10)
AAM fault memory AD80.35-P-5001GH 
AD54.21-P-4000GH
N10
Central locking cannot be operated with the central locking switch (S21s10) Central locking switch (S21s10)
All-Activity Module (AAM) (N10)
    AD80.20-P-6001-01GH 
Central locking does not lock Central locking relay, lock all doors (F1k20)
All-Activity Module (AAM) (N10)
  AD80.20-P-6001-43GH 
Left front door and fuel tank flap are not unlocked Central locking relay, unlock right door and rear doors (F1k23)
All-Activity Module (AAM) (N10)
  AD80.20-P-6001-43GH 
Right front door, left rear door and right rear door are not unlocked Central locking relay, unlock left door and fuel tank flap (F1k24)
All-Activity Module (AAM) (N10)
  AD80.20-P-6001-43GH 
Individual side doors are not locked/unlocked Right front and left front door rotary tumbler microswitch (S87/6), (S87/7)
Central locking microswitch (M14/5s1), (M14/6s1)
Right front and left front door CL actuating motor (M14/5), (M14/6)
Left rear and right rear door rotary tumbler microswitch (S87/2), (S87/3)
Central locking microswitch (M14/8s1), (M14/9s1)
Left rear door and right rear door CL actuating motor (M14/8), (M14/9)
All-Activity Module (AAM) (N10)
Front door
Rear door
AD80.20-P-6001-39GH 
AD80.20-P-6001-41GH 
AD80.20-P-6001-42GH 
AD80.20-P-6001-41GH 
AD80.20-P-6001-42GH 
AD80.20-P-6001-40GH 
N10
Tailgate is not locked/unlocked Rotary tumbler/trunk lid microswitch (S88/1)   AD80.20-P-6001-44GH 
Central locking microswitch (M14/7s1) AD80.20-P-6001-45GH 
Central locking relay, unlock tailgate (F1k15) AD80.20-P-6001-43GH 
Tailgate CL actuating motor (M14/7) AD80.20-P-6001-46GH 
All-Activity Module (AAM) (N10) N10
Fuel tank flap is not locked/unlocked Filler flap CL actuating motor (M14/10)   AD80.20-P-6001-47GH 
All-Activity Module (AAM) (N10) N10
No visual feedback from turn signal system when locking with transmitter key Control module adaptation "CL visual feedback" activated
Left front door (S87/7), right front door (S87/6), left rear door (S87/2), right rear door (S87/3), trunk lid (S88/1) rotary tumbler microswitch
Central locking microswitch
(M14/5s1), (M4/6s1), (M14/8s1), (M14/9s1), (M14/7s1)
Front doors
Rear doors
Tailgate
Side doors
Tailgate
AD54.21-P-2000-02GH
AD80.20-P-6001-39GH 
AD80.20-P-6001-40GH 
AD80.20-P-6001-44GH 
AD80.20-P-6001-41GH 
AD80.20-P-6001-45GH 
Automatic locking inoperative Control module adaptation "Automatic locking when driving" activated   AD54.21-P-2000-02GH
All-Activity Module (AAM) (N10) N10