CIRCUIT TEST MB - OUTPUT TEST MODE NOT FUNCTIONING Lincoln Continental IX

CIRCUIT TEST MB - OUTPUT TEST MODE NOT FUNCTIONING

Note. After each service or repair procedure has been completed, reconnect all components. Clear DTCs and repeat QUICK TEST procedures to ensure all EEC-V systems are working properly

Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following

1. Connection between scan tool and PCM.
2. Connection between scan tool and battery power supply.
3. Correct key sequence executed for outputs.

1. 1) Check Scan Tool Installation Turn ignition off. Check connection between scan tool and Data Link Connector (DLC) for damage or contamination. Service as necessary. If connector is okay, go to next step.
2. 2) Check Scan Tool Power Supply Connector Check connector and wiring harness cable between scan tool and battery power supply for poor connection or damage. Repair as necessary. Perform «ON-BOARD SYSTEM READINESS (OSR) TEST MODE»(ref-131243-S37697508192001123100000) under ADDITIONAL SYSTEM FUNCTIONS to verify communication between scan tool and PCM. See scan tool manufacturer instructions, if necessary. If connector and wiring harness cable are okay, no problem with scan tool installation is indicated. Ensure correct key sequence was used to access outputs in OUTPUT TEST MODE.

Perform this test when instructed during QUICK TEST or if directed by other test procedures. This test is used to diagnose the following

1. Wiring harness circuit (MIL).
2. Faulty Powertrain Control Module (PCM).

MIL Circuit Schematic. Scheme 53

Note. If vehicle will not start, go to CIRCUIT TEST A .

1. 1) MIL Always On If any KOEO or Continuous Memory DTCs are present, service DTCs as necessary before continuing. If no DTCs are present, turn ignition off. Disconnect PCM 104-pin connector. Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Install Breakout Box (014-00950), leaving PCM disconnected. Measure resistance between test pins No. 2 and No. 51 or 103 (PWR GND) at breakout box. If resistance is less than 5 ohms, repair short in MIL circuit between test pin No. 2 and MIL. If resistance is 5 ohms or more, replace PCM.
2. 2) MIL Does Not Come On Turn ignition on. Measure voltage between ground side of MIL fuse and negative battery terminal. If voltage is 10.5 volts or less, go to next step. If voltage is more than 10.5 volts, go to step 4).
3. 3) Check For B+ At Fuse Measure voltage between positive side of MIL fuse and negative battery terminal. If voltage is 10.5 volts or less, repair open in MIL or B+ circuit. If voltage is more than 10.5 volts, replace MIL fuse.
4. 4) Check For B+ At MIL Bulb Turn ignition off. Disconnect instrument cluster connector. Turn ignition on. Measure voltage between B+ circuit terminal at instrument cluster wiring harness connector and negative battery terminal. If voltage is more than 10.5 volts, go to next step. If voltage is 10.5 volts or less, repair open in fuse, MIL bulb or B+ circuit to instrument cluster. See INSTRUMENT PANELS article in the ACCESSORIES & EQUIPMENT section.
5. 5) Check Continuity Of MIL Circuit Turn ignition off. Disconnect PCM 104-pin connector. Inspect connector for loose, damaged or corroded terminals. Repair as necessary. Install Breakout Box (014-00950), leaving PCM disconnected. Measure resistance between test pin No. 2 at breakout box and MIL terminal at instrument cluster wiring harness connector. If resistance is 5 ohms or more, repair open in MIL circuit. If resistance is less than 5 ohms, check MIL bulb and instrument cluster. See INSTRUMENT PANELS article in the ACCESSORIES & EQUIPMENT section. Repair as necessary. If no problems are found, replace PCM.