INTERCOOLER Models ECI System Modulator (14-01-86)

INTERCOOLER MODELS ECI SYSTEM MODULATOR

TECHNICAL SERVICE BULLETIN

MODULATOR ADDED TO ELECTRONIC CONTROL INJECTION (ECI)

Model(s): 1985 Conquest with Intercooler

Group: Engine Performance

Bulletin No.: 14-01-86

Date: January 17, 1986

SERVICE INFORMATION

The information in this article pertains to a modulator added to the Electronic Control Injection (ECI) system on Conquest vehicles equipped with an intercooler. The purpose of the modulator, PN MD099402, is to control throttle position sensor (TPS) output voltage from exceeding 3V going to the electronic control unit (ECU). Therefore, when the accelerator is kept at the wide open position, TPS voltage measured at the ECU connector shall be 3V. Please also note that vehicles built before February 11, 1985, use an adaptor, PN MD099444, and adaptor harness, PN MD099404, to connect the modulator into the chassis ECU control harness as shown in Fig 1 . The terminal identification for the adaptor and adaptor harness connectors is shown in Fig 2 . On vehicles built February 11, 1985 and later, the chassis control harness has been changed so that the adaptor and adaptor harness are no longer required. In their place a new harness, PN MDO99551, is used as shown in Fig 3 .