Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1993E 350 VAN V8-7.3L DSLREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSTF - TRANSMISSION SPEED SENSORTF - TESTING NOTES
1993 Ford E 350 Van V8-7.3L DSL
TF - Testing Notes
1993 Ford E 350 Van V8-7.3L DSLSECTION TF - Testing Notes
NOTE: You should enter this Pinpoint Test only when you have been directed here from Quick Test.
REMEMBER
This Pinpoint Test is intended to diagnose only the following:
- Powertrain Control Module (PCM) (12A650)
- Harness circuits
- TSS (7M101) or (7H103)
DESCRIPTION
The Transmission Speed Sensor (TSS) is a magnetic pickup that sends a signal to the PCM. This signal tells the PCM the transmission rpm. On AXODE (AX4S) applications the TSS is located in the "chain cover" halfshaft area which is on the right side of the transmission. On AODE/4R70W applications the TSS is located on the rear of the transmission case, driver's side.
REMEMBER
This Pinpoint Test is intended to diagnose only the following:
- Powertrain Control Module (PCM) (12A650)
- Harness circuits
- TSS (7M101) or (7H103)
DESCRIPTION
The Transmission Speed Sensor (TSS) is a magnetic pickup that sends a signal to the PCM. This signal tells the PCM the transmission rpm. On AXODE (AX4S) applications the TSS is located in the "chain cover" halfshaft area which is on the right side of the transmission. On AODE/4R70W applications the TSS is located on the rear of the transmission case, driver's side.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.