Check quiescent current consumption - AR54.10-P-1030C: Notes

MODEL 170 

Modification notes

5.8.04

Prerequisites and sequence of quiescent current testing expanded

Steps 2.1, 5.1, 6.1: model 170 with Audio 10 CD radio

1.1	Prepare test with quiescent current retention unit		AR54.10-P-1030-01AD
		Electrical connection set	Figure
		Multimeter	*WH58.30-Z-1001-09A
		Quiescent current retention unit CMP 12.2	*WH58.30-Z-1012-09A
1.2	Preparing test without quiescent current retention device		AR54.10-P-1030-02AD
		Electrical connection set	Figure
		Multimeter	*WH58.30-Z-1001-09A
2.1	Preparatory measures for the quiescent current check	Model 170 with MB Audio 10 RDS radio with CD drawer only, code 756.	AR54.10-P-1000-01GH
3	Switch off all consumers	Close roof, Remove ignition key, Switch off stationary heater, Switch off car telephone, Switch off radio (except model 170 with MB Audio 10 RDS radio with CD drawer, code 756), Switch off interior protection, Switch off make-up mirror and Switch off reading lamp, Turn exterior lamp switch to position "0", Close doors, the interior lights must go out automatically after a few seconds, close luggage compartment cover.
4	Check quiescent current	If specification for total quiescent current is not achieved: ↓	AR54.10-P-1030-03C
		Determine circuit with increased quiescent current consumption Specification not achieved: ↓	AR54.10-P-1030-04C
		Determine fuse-protected components with increased quiescent current consumption Specification not achieved: ↓	AR54.10-P-1030-05AB
		Determine non-fuse protected components with increased quiescent current consumption If the specified value is not attained during the quiescent current test, then the quiescent current test should be carried out again after eliminating the fault.	AR54.10-P-1030-06AB
		Electrical connection set	Figure
		Quiescent current test adapter 1	Figure
		Quiescent current test adapter 2	Figure
		Multimeter	*WH58.30-Z-1001-09A
5.1	Preparatory measures for reference test of quiescent current consumption	Model 170 with MB Audio 10 RDS radio with CD drawer only, code 756.	AR54.10-P-1000-01GH
6.1	Carry out reference test for quiescent current consumption	Model 170 with MB Audio 10 RDS radio with CD drawer only, code 756  : on vehicles with an extreme suspicion of an increased quiescent current and a correct result of quiescent current consumption, a reference test of quiescent current consumption must be carried out. Whilst retaining the adjustments for reference test described in step 5.1, the quiescent current must have fallen by 600 mA after 20 minutes at the latest. If the quiescent current does not fall but remains at the same level: ↓	AR54.10-P-1030-03C
		Replace MB Audio 10 RDS radio with CD	AR82.60-P-7502EB

Fig 1: Identifying Electrical Connection Set (201 589 00 99 00)

Fig 2: Identifying Quiescent-Current Test Adapter 1 (140 589 12 21 00)

Fig 3: Identifying Quiescent Current Test Adapter 2 (140 589 13 21 00)

Commercially available tools

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