90xj06
NAXJA Forum User
- Location
- Peabody, MA
88 cherokee ecu is showing low voltage on my REM with a/c on and blower on high its reading 12.0-12.6 this should be a reading at the b+ latch voltage at the ecu. at the diagnostic port D2-12 im showing ~13.28 and at the battery 13.58. so charge voltage is good.
i have not checked the actual voltage at the ecu yet.
i also have not checked the ground for the ecu. pin D1-3 has no connection to battery- i will try and check at an injector.
also according to the manuals i have D2-12 shouldn't be populated. and latch should be on D2-5?
i do have a 90 ECU in this, i suppose i could check it with the 88 ECU and see if it reads right. it may be a faulty ecu.
i have not checked the actual voltage at the ecu yet.
i also have not checked the ground for the ecu. pin D1-3 has no connection to battery- i will try and check at an injector.
also according to the manuals i have D2-12 shouldn't be populated. and latch should be on D2-5?
i do have a 90 ECU in this, i suppose i could check it with the 88 ECU and see if it reads right. it may be a faulty ecu.