coolant OPEL ASTRA 1991 Electronic Workshop Manual

Downloaded from www.Manualslib.com manuals search engine TESTING INFORMATION AND TEST PROCEDURES
Typical Simultaneous Injection Duration
Engine ColdMs
Cranking ------------------------------------------>4
Idle -------------------------------------------3.5 to 4
Engine Warm
Idle---------------------------------------------2.5
1000rpm2.3*
20002.1*
30002.0*
Snap Throttle>7Sequential injection systems will be less than twice the above values due to single pulsingper engine cycle.
NOTES.THE USE OF A 4 GAS ANALYSER CAN GREATLY AID DIAGNOSTICDIRECTION AND TIME.
Comparing mixture content to injector pulse width can identify components and systems to
be tested in a logical sequence.
Example :A rich mixture could indicate high fuel pressure, incorrect manifold pressure,
incorrect coolant temp, etc,etc.
D.N. 12/97* Gradually leans out,depending on load

Downloaded from www.Manualslib.com manuals search engine DIAGNOSTIC CODES
Code Cause
_____________________________________________________
14 Coolant temperature sensor voltage too low
15 Coolant temperature sensor voltage too high
21 TPS voltage too high
22 TPS voltage too low
25 MAT sensor voltage too low
26 MAT sensor voltage too high
33 MAP sensor voltage too high
34 MAP sensor voltage too low
35 Idle control stepper motor failure
36 Timing map selector error
42 Reference signal error/Engine stall
(Diagnostic lamp will not turn ON)
44 Fuel map selector error
48 Battery voltage too low
49 Battery voltage too high
65 CO potentiometer voltage out of range