Service manual

90-898303 2-32
EFI Injector Timing Signal Test
Use DDT to monitor injector timing signals.
EFI Detonation Control System
The Detonation Control System will only retard the timing approximately 1-2
degrees (uses the same system as shift stabilizer on carburetor models).
Use DDT monitor Knock Volts.
CDM Stop Diode Troubleshooting
2.0/2.5 LITRE 6 CYL.:
CDM #1, #2 and #3 get their charging ground path through CDM #4, #5 or #6.
CDM #4, #5 and #6 get their charging ground path through CDM #1, #2 or #3.
A shorted Stop Diode in CDM #1, #2 or #3 would prevent CDMs #4, #5 and #6
from sparking.
A shorted Stop Diode in CDM #4, #5 or #6 would prevent CDMs #1, #2 and #3
from sparking.
Notes
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