03-29-2018, 11:03 PM
the car has 2 fuse boxes.
one under hood (FI is there) 15A
and one cab box, IG and dome there) 20A AND 10Amp for dome. (dome only keeps memory DTC data , from forgetting key off, if dome blows the scan tool will not work at DLC pin 16)
the FI fuse runs main relay ECU (this relay can fail too)
FI runs the CMP Hall sensor too. and is a key sensor for spark. if it dies, all spark ends, in an instant.
CKP is non hall sensor, on this car and signals weak, so the wiring to it must be very good.
DTC P0335 is this failing.
No signal from the CKP sensor with the PCM receiving 20 pulses from the CMP sensor.
I guess the 1999 has 2 COP coils and no distributor, correct? 1.6L
the ECU first transistors in the 2 cops (called wasted spark system)
the cops do not drive the tachometer
so if the TACHO goes ,dead that means the ECU saw RPM go DEAD, that means CKP when dead, or CMP dead or the ECU lost power, that is why I asked what the CEL did at the moments of the stall. (must come on)
one under hood (FI is there) 15A
and one cab box, IG and dome there) 20A AND 10Amp for dome. (dome only keeps memory DTC data , from forgetting key off, if dome blows the scan tool will not work at DLC pin 16)
the FI fuse runs main relay ECU (this relay can fail too)
FI runs the CMP Hall sensor too. and is a key sensor for spark. if it dies, all spark ends, in an instant.
CKP is non hall sensor, on this car and signals weak, so the wiring to it must be very good.
DTC P0335 is this failing.
No signal from the CKP sensor with the PCM receiving 20 pulses from the CMP sensor.
I guess the 1999 has 2 COP coils and no distributor, correct? 1.6L
the ECU first transistors in the 2 cops (called wasted spark system)
the cops do not drive the tachometer
so if the TACHO goes ,dead that means the ECU saw RPM go DEAD, that means CKP when dead, or CMP dead or the ECU lost power, that is why I asked what the CEL did at the moments of the stall. (must come on)
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