Join Date: Oct 2003
Bronco Info: 96 Bronco XL 5.0 E4OD, Man Xfer/Hubs
yo more on DTC 63 in KOEO Throttle Position Sensor (TPS) below minimum 0.6 volts
DH4 CHECK VREF CIRCUIT VOLTAGE; Key off. l TP sensor disconnected. Key on, engine off. Measure voltage between VREF circuit and SIG RTN circuit at the TP sensor vehicle harness connector. Is voltage between 4.0 and 6.0 volts?
Yes, REPLACE TP sensor. RERUN Quick Test.
No, Key off. RECONNECT all components. GO to Pinpoint Test Step C1.
C1 CHECK VEHICLE BATTERY POWER CIRCUIT; Key off. Disconnect Powertrain Control Module (PCM). Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary. Install breakout box and connect PCM to breakout box. Key on, engine off. Measure voltage between Test Pin 37 at the breakout box and SIG RTN circuit in the Data Link Connector (DLC). Note voltage. Measure voltage across battery terminals. Note voltage. Are both voltages greater than 10.5 volts, and are both voltages within 1.0 volt of each other?
Yes, GO to C2. No Key Off, RECONNECT sensor (if applicable).
GO to B1
I don't have the B2 nor C2, yet.
BOB test pins numbersp are most often same as EEC pins numbers