P0615 ISUZU – Start Signal Circuit

P0615 ISUZU Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P0615 ISUZU Possible Causes

Park/neutral position (PNP) relay (starter relay),Park/neutral position (PNP) relay (starter relay) harness is open or shorted,Park/neutral position (PNP) relay (starter relay) circuit poor electrical connection,Faulty Transmission Control Module (TCM)

P0615 ISUZU Description

Transmission Control Module (TCM) controls park/neutral (PNP) relay (starter relay) in IPDM E/R. TCM switches PNP relay ???N??at ?????or ?????position and allows to crank engine. Then it prohibits cranking other than at ?????or ?????position.