| 204 - ELECTRICAL ROUTINE |
| Powertrain Control System |
- Electrical inputs/outputs, vehicle wiring harnesses, internal transmission wiring harness, PCM, VSS, TP, RPM, EPC solenoid
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| 304 - HYDRAULIC/MECHANICAL ROUTINE |
| Incorrect Pressures |
- Incorrect band/clutch application pressure, high line pressure
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- Check line pressure at tap. Carry out line pressure and stall speed tests. See the LINE PRESSURE CHART for specification. If pressures are high, check the following component: main control.
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| Main Control Assembly |
- Screw out of torque specification
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- Tighten to specification.
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- Gasket damaged, off location
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- Inspect and install a new gasket.
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- Inspect for damage. Repair as required.
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- EPC solenoid stuck, damaged, O-ring damaged or out bore
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- Inspect for damage. Carry out pinpoint test. Repair as required.
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- Reverse modulator valve (205), forward modulator valve/EPC boost valve (207), forward engagement control valve (209), spring, damaged, missing, misassembled, stuck bore damaged
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- Inspect for damage. If damaged, install a new main control. If parts are missing, install new parts or main control. If misassembled, reassemble correctly. Do not stone, file or sand valves. This will remove the anodized finish and may result in further main control or transmission damage.
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- Wrong component used in rebuild
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- Verify that correct components were used.
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| Forward Clutch Assembly |
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- Check balls missing or damaged
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- Inspect for mislocation, poor seating, damage. Install a new forward clutch cylinder.
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- Friction element damaged or worn
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- Inspect for damage. Repair as required.
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- Inspect for damage. Repair as required.
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