Testing Quiescent Current Consumption

1.1 Open engine hood and position vertically
- Model 163

1.2 Open window in right rear door
- Model 210

1.3 Open trunk lid or rear door
- Models 202.208 and 129

1.4 Remove rear seat
- Model 210 sedan

1.5 Fold rear seat cushion forward and remove battery compartment cover
- Model 210 T-model

2.1 Open windows in front doors
- Model 129

3.1 Warm up engine
- Model 129.076


NOTE: Coolant temperature > 100 °C


4.1 Switch off engine and wait 12 minutes
- Model 129.076

- Refer to Special Tools below


NOTE: When the ignition is switched off the hot water pump is activated for 10-12 minutes to cool the engine if the coolant temperature > 100 °C.


5.1 Prepare test with quiescent current retention unit
- Model 163

- Models 202, 208 and 129 Preparing For Test With Quiescent Current Retention Device - II


- Model 210

5.2 Prepare test without quiescent current retention unit
- Model 163

- Model 210



- Models 202, 208 and 129

6 Switch off all electrical consumers
e.g.
- Withdraw ignition key
- Switch off auxiliary heater
- Switch off car phone
- Switch off radio
- Switch off interior monitor
- Switch off vanity mirror
- Switch off reading lamp
- Turn light switch to "0"
- Close doors; interior light must go out automatically after a few seconds

7 Test quiescent current
Refer to Special Tools below

- Model 129 Determining Source of Increased Quiescent Current
- If total quiescent current specification is not attained:
- Determine circuit with increased quiescent current consumption
- Model 129 Determining Source of Increased Quiescent Current

- Specification not attained: Testing Quiescent Current Consumption
- Determine fused component with increased quiescent current consumption

- Specification not attained: Determining Source of Increased Quiescent Current
- Determine unfused component with increased quiescent current consumption.
- To check results, test quiescent current again
- Model 129

Special Tools:

Commercially Available Tools: