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Home >> Mercedes Benz >> 2003 >> CLK500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 324 (Electrical System, Equipment & Instructions -- CLK350 Coupe (209.356)) >> Testing & Repair >> Check quiescent current consumption - AR54.10-P-1030P

Check quiescent current consumption - AR54.10-P-1030P

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MODEL 209 

Shows model 463.249 

Fig 1: Identifying Cup Holder And Battery Box Lid
G07718293Courtesy of MERCEDES-BENZ USA
INSPECT Checking     
DANGER Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001-01A 
NOTES Notes on battery All models AH54.10-P-0001-01A 
1.1 Remove dust filter housing for heating/ventilation IMPORTANT Model 203, 209.  
REFER TO MAINTENANCE AP83.00-P-8381P
1.3 Remove battery box cover (B)    
2.1 Preparing test with quiescent current retention unit   AR54.10-P-1030-01P 
COMMERCIALLY AVAILABLE TOOLS Multimeter *WH58.30-Z-1001-09A 
COMMERCIALLY AVAILABLE TOOLS Quiescent current retention unit CMP 12.2 *WH58.30-Z-1012-09A 
2.2 Prepare test without quiescent current retention unit   AR54.10-P-1030-02P 
COMMERCIALLY AVAILABLE TOOLS Multimeter *WH58.30-Z-1001-09A 
3 Switch off all consumers IMPORTANT Remove transmitter/ignition key.
Switch off stationary heater.
Switch off car phone.
Switch off radio.
Switch off interior protection.
Switch off vanity mirror
Switch off reading light.
Turn rotary light switch to "0" position.
Close doors, the interior illumination must go out automatically after a few seconds.
With COMAND: Remove CD-ROM from COMAND, switch off COMAND.		  
DANGER Risk of injury  to skin and eyes caused by handling hot or glowing objects. Wear safety gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
4 Check whether auxiliary water pump is operating IMPORTANT Carefully touch coolant hose or additional water pump
Auxiliary water pump operating: ↓
Do not commence quiescent current test until pump has switched off.
5 Testing quiescent current   AR54.10-P-1030-03P 
SPECIAL TOOL Baseline current draw test adapter 1 Figure
SPECIAL TOOL Quiescent current test adapter 2 Figure
COMMERCIALLY AVAILABLE TOOLS Multimeter
If specification for total quiescent current is not achieved: ↓		 *WH58.30-Z-1001-09A 
Determine circuit with excessive quiescent current consumption.
Specification not achieved: ↓		 AR54.10-P-1030-04P 
Determine fuse-protected components with increased quiescent current consumption.
Specification not achieved: ↓		 AR54.10-P-1030-05P 
Determine non-fuse protected components with increased quiescent current consumption. AR54.10-P-1030-06P 
To check, re-test quiescent current. AR54.10-P-1030-03P 
6 Render electrical system operational IMPORTANT Only if no quiescent current retention device has been used. See:↓  
Perform basic programming. AR00.19-P-0200P
Fig 2: Identifying Quiescent Current Test Adapter 1 (140 589 12 21 00)
G07718294Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Quiescent Current Test Adapter 2 (140 589 13 21 00)
G07718295Courtesy of MERCEDES-BENZ USA
COMMERCIALLY AVAILABLE TOOLS

Number Designation
WH58.30-Z-1001-09A Multimeter
WH58.30-Z-1012-09A Quiescent current retention unit
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