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 TESTSTC - TRANSMISSION SOLENOIDSTC - TESTING NOTES
1993 Ford E 350 Van V8-7.3L DSL
TC - Testing Notes
1993 Ford E 350 Van V8-7.3L DSLSECTION TC - Testing Notes
NOTE: You should enter this Pinpoint Test only when you have been directed here from Quick Test.
REMEMBER
This Pinpoint Test is not intended to diagnose components interior to the transmission. To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault.
- Engine
Performance, vacuum, cooling
- Brakes
Not releasing
- Electrical
Alternator, battery, integrity
- Transmission
Hydraulic fluid, friction elements, cooling
This Pinpoint Test is intended to diagnose only the following:
- Harness circuits: M/CCC, CCO, CCS, EPC, SS3/4-4/3 SS1, SS2, SS3, SIG RTN, EPC PWR, and VPWR
- Processor assembly
DESCRIPTION
The A4LD, AXOD-E, AOD-E, and E40D transmissions use solenoids to shift transmission gear ratios, connect both turbine and impeller in the torque converter, and provides coasting on deceleration. The ground signal is controlled by the EEC-IV processor and 12 volts VPWR is supplied to the solenoids from the EEC-IV power relay.
REMEMBER
This Pinpoint Test is not intended to diagnose components interior to the transmission. To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault.
- Engine
Performance, vacuum, cooling
- Brakes
Not releasing
- Electrical
Alternator, battery, integrity
- Transmission
Hydraulic fluid, friction elements, cooling
This Pinpoint Test is intended to diagnose only the following:
- Harness circuits: M/CCC, CCO, CCS, EPC, SS3/4-4/3 SS1, SS2, SS3, SIG RTN, EPC PWR, and VPWR
- Processor assembly
DESCRIPTION
The A4LD, AXOD-E, AOD-E, and E40D transmissions use solenoids to shift transmission gear ratios, connect both turbine and impeller in the torque converter, and provides coasting on deceleration. The ground signal is controlled by the EEC-IV processor and 12 volts VPWR is supplied to the solenoids from the EEC-IV power relay.
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.