3.
Probe(+) : CKPS harness connector NO1.
Probe(-) : Chassis ground.
a.
Specification: If injector operating sound can be heard in propotion to simulation frequency, it is OK.
Turn ignition switch to OFF and disconnect CKPS harness connector.
Turn ignition switch to ON.
Probe(+) : CKPS harness connector NO1.
Probe(-) : Chassis ground.
Specification: If injector operating sound can be heard in propotion to simulation frequency, it is OK.
Is CKPS sensor data changing within specification?
YES
Temporarily install a known good CKPS and check for proper operation.
If problem is corrected, replace CKPS.
NO
ECM internal faulty.
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
