Truck Just Died And Won't Start P1689
#51
Man all these problems must Sure suck Good Luck getting this things healthy i would of already introduced it to a Steep Cliff
#54
Hey guess what, I was able to pull codes and I pulled that code and 1698.
P1689-NO COMMUNICATION BETWEEN ECM & INJECTION PUMP MODULE (OBD II)
POSSIBLE CAUSES
Fuel inj pump ground circuit open or high resistance
Fuel pump control module harness observable defect
Datalink (+) circuit open
Datalink (+) circuit short to ground
Datalink (-) circuit open
Datalink (-) circuit short to ground
Engine Control Module
P1698-NO BUS MESSAGES RECEIVED FROM PCM
POSSIBLE CAUSES
CCD bus (+) circuit open
CCD bus (-) circuit open
PCM ground circuit open
Powertrain control module
P1689-NO COMMUNICATION BETWEEN ECM & INJECTION PUMP MODULE (OBD II)
POSSIBLE CAUSES
Fuel inj pump ground circuit open or high resistance
Fuel pump control module harness observable defect
Datalink (+) circuit open
Datalink (+) circuit short to ground
Datalink (-) circuit open
Datalink (-) circuit short to ground
Engine Control Module
P1698-NO BUS MESSAGES RECEIVED FROM PCM
POSSIBLE CAUSES
CCD bus (+) circuit open
CCD bus (-) circuit open
PCM ground circuit open
Powertrain control module
#55
Well, I have not had any more problems. I just wanted to update this thread so someone else might get some benefit. I did swap the fuel system relay under the hood with another to rule that out, charge the batteries to be absolutely sure they had a good charge, and cleaned and tightened the terminals. I have run a Smarty on it, and I tapped the pump wire on my Comp. We will see if the problems resurface now that the Comp is on properly.