AVL DiGas 4000 User Manual

4-/5-Gas Measuring Instruments Unit AVL 4000
5-16 Service Manual
Primary error symptom Primary cause
(of error)
Secondary cause of
error
Possible tests/
establishing cause
Remedy
Faulty measuring
instruments unit
ES in service mode
not 000000
Replace measuring
instruments unit
Faulty pump Short circuit
Interference
Self-test when
pump switched on
or during zeroing
Replace pump
Faulty pump cable
(465)
Pump cable abraded
or worn
Self-test when
pump switched on
or during zeroing
Insulate cable
Use edge protectors
Electrical
interference (EMC)
Faulty vehicle
ignition cable
Faulty ignition
Software error
Radio or telephone
interference?
Are there sparks?
Ignition interference
in vehicle?
Very damp
atmosphere?
Radioing equipment
in the vicinity?
Try placing the
instrument
somewhere else
Mains voltage
fluctuation
Less than 180,
greater than 265 V
Mains too weak
Other equipment
being operated, e.g.
dynamometer, large
fan
Connect instrument
to another mains
phase
Self-test
Restart after O
2
sensor activated
Electronics fault or
faulty O
2
sensor
Test O
2
sensor
5…15 mV
or zeroing (ok)
→
exhaust gas (ok)
→ air incorrect O
2
value
Replace measuring
instruments unit
Replace O
2
sensor

AVL DiGas 4000 Specifications

General

Brand	AVL
Model	DiGas 4000
Category	Test Equipment
Language	English