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Home >> Kia >> 2003 >> Rio Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1586: Automatic Transaxle Or Manual Transaxle Encoding Malfunction >> Test Procedure
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Test Procedure

  1. If vehicle is equipped with manual transaxle, go to next step. If vehicle is equipped with automatic transaxle, go to step  3 .
  2. Turn ignition off. Disconnect ECM connector "B04". See Figure . Measure resistance between ground and ECM connector terminal B04-30 (Red/White wire). Resistance should be infinite. If resistance is as specified, problem is intermittent, check for possible poor connection at ECM connector terminals, repair if necessary. Go to step  4 . If resistance is not as specified, repair short circuit as necessary. See RIO under ENGINE PERFORMANCE in WIRING DIAGRAMS article. After repair go to step  4 .
  3. Turn ignition off. Disconnect ECM connector "B04". See Figure . Measure resistance between ground and ECM connector terminal B04-30 (Red/White wire). Resistance should be below one ohm. If resistance is as specified, problem is intermittent, check for possible poor connection at ECM connector terminals, repair if necessary. Go to step  4 . If resistance is not as specified, repair open circuit as necessary. See RIO under ENGINE PERFORMANCE in WIRING DIAGRAMS article. After repair go to step  4 .
  4. After repair, return vehicle to original condition. Clear codes using Hi-Scan Pro/Kia Data Pro Scan tool or equivalent. Verify repairs by driving vehicle and monitoring for pending codes. If DTC is set during test drive, follow appropriate DTC test procedure.
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