Many malfunctions in the electrical system are caused by poor harness(s) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Check the following conditions:
Check for damaged harness and terminals: contact resistance, oxidation, bent or broken terminals.
Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection
Use a suitable male pin to ensure that contact in sockets is good. The pin should remain in position when pulled gently.
Has a problem been found?
YES
Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
System OK. Go to "Verification of Vehicle Repair" procedure
Turn ignition switch to OFF and disconnect PCSV connector.
Turn ignition switch to ON
Measure voltage of PCSV signal circuit between ISA harness connector and chassis ground..
Probe(+) : PCSV harness connector NO2.
Probe(-) : Chassis ground.
Specification: below 0.5V
Is the voltage within specification?
YES
Go to "Component Inspection"
NO
Short circuit to battery between PCSV signal circuit and ECM.
Repair as necessary and go to "Verification of Vehicle Repair"
1.In case the voltage at terminal 1 of PCSV is 12 V when PCSV is disconnected.
Possible cause:Short circuit in battery power line after fuse(15A INJ)
