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Home >> Suzuki >> 1995 >> Sidekick JS, 2D Utility, Standard >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - Aw03-72LE >> Symptom Trouble Shooting >> No TCC Lock-Up
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No TCC Lock-Up

  1. Ensure engine and transmission are at normal operating temperature. Retrieve trouble codes. See RETRIEVING TROUBLE CODES . If a trouble code is present, repair as needed. Clear trouble codes. See CLEARING TROUBLE CODES . If no trouble codes are present, go to next step.
  2. Raise and support vehicle. Using a DVOM, measure voltage (backprobe) between chassis ground and TCM harness connector terminal S3 while operating vehicle through all forward gears with shift selector in "D" position. See Figure. Go to next step.
  3. Ensure mode switch is in "N" (normal) position. Accelerate to 35 MPH. If battery voltage is present, inspect TCC solenoid. See SHIFT SOLENOIDS under COMPONENT TESTING . Replace as needed and retest. If battery voltage is not present, measure voltage (backprobe) between chassis ground and TCM harness connector terminal BK. See Figure. Go to next step.
  4. Depress and release brake pedal while monitoring voltage. If reading is zero volts with pedal released, and battery voltage with pedal depressed, go to next step. If reading is not as specified, inspect brake switch and circuit. Repair as needed.
  5. Measure voltage (backprobe) between chassis ground and TCM harness connector terminal WT. See Figure. If reading is zero volts with engine coolant temperature below 77°F (25°C), and battery voltage with engine coolant temperature above 86°F (30°C), go to step 7). If reading is not as specified, go to next step.
  6. Inspect ECT sensor. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Repair or replace sensor as needed. If sensor is okay, go to next step.
  7. Measure voltage (backprobe) between chassis ground and TCM harness connector terminal L4. If reading is zero volts with transfer case in 4WD position, and battery voltage in 2WD position, replace TCM and retest. If reading is not as specified, replace 4WD switch (located on side of transfer case).
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