A/T Dealer Level Testing
Applies directly to our truck. Use the Turbocharged rows throughout.
Axle Speed Sensor testing
- Locate sensor as shown. Remove connector.
- Use an ohm meter and verify readings. Limit: 100-3000 (unit not stated in source — same value/flag as in Automatic Transmission Specifications; verify printed p.182).
Note: Out-of-range units must be replaced.
Valve Body Shift Control Solenoid Valves
- Drain ATF fluid.
- Remove oil pan.
- Disconnect connectors.
- Pin #1 to Ground (-) test. Ohm limit: 11-15 Ω (verify — source shows “11-150”; likely an OCR-inserted trailing digit, see note below).
- Pin #2 to Ground test. Ohm limit: 11-15 Ω.
Note: Replace failed units as required.
(verify printed p.183-184) — the Pin #1 limit was transcribed as “11-150” and Pin #2 as “11-15”. Given Automatic Transmission Specifications states 11-15 Ω for both Solenoid Coil No.1 & No.2, “11-150” is most likely a duplicate 11-15 Ω with a stray OCR digit — but this is not confirmed.
Solenoid No.3 (Turbocharged) — applies to our truck
- Remove Solenoid No.3 connector.
- Use an ohm meter to check limits. Ohm limit: 11-15 Ω (verify — source shows “11-150”, same flag as above and consistent with the “11-1502” figure flagged in Automatic Transmission Specifications).
Torque Converter test
Pre-test requirements: Confirm ATF fluids are at proper levels.
- Connect an RPM gauge.
- Start engine and allow it to warm to operating temperature.
- Test both “D” & “R” range using the same method.
- Run engine RPM per the stall speed limits below.
| Stall speed limit | RPM |
|---|---|
| Non-Turbocharged | 2700-3300 RPM |
| Turbocharged (our truck) | 3500-4100 RPM |
- If the Torque Converter fails the test, continue to the Fluid Pressure Test below.
Fluid Pressure testing
- Locate Oil Pressure Test Plug and remove.
- Attach MD998330 & MD998332 oil pressure adapters.
- Connect oil pressure gauge and run the line into the vehicle as shown.
- Perform the test per the chart below.
| Range | Non-Turbo | Turbo (our truck) |
|---|---|---|
| “D” Range, Idle & Stall | 520-667 kPa (5.3-6.8 kgf/cm²; 75-97 psi) | 735 kPa (7.5 kgf/cm²; 107 psi) |
| “R” Range, Idle & Stall | 1216-1540 kPa (12.4-15.7 kgf/cm²; 176-223 psi) | 1559 kPa (15.9 kgf/cm²; 226 psi) |
Note: If the pressure test fails, replace the Torque Converter and retest.
