Battery/Starter (Current Measurement)
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Measurement: |
Plot of the Starter Current during the start procedure. |
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Check Objective: |
Evaluation of the battery charge and the current supply to the battery as well as the operation of the starter. |
Preparation
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Zero current probes using multimeter test (see section 2.5). Do not thereafter alter the setting of the knurled zeroing knob. Bring engine to operating temperature (post heating phase). |
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Switch off the engine, switch off the ignition, switch off all electrical loads. |
Connections
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INPUT A |
COM/TRIGGER |
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Clamp current measurement probe across all positive and negative leads on the battery. The positive marking on the current probe must point towards the positive pole. Select the measurement range 1 mV/A. |
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Procedure Start engine. Reference Curve | 
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Fault Diagram 1 Symptoms: Maximum < 800 A Signal end < 0 A | 
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Possible Causes |
Countermeasures |
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Poor contact |
Check supply leads and connections to the battery and starter. |
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Faulty starter |
Check and repair starter, if necessary. |
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