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Home >> Kia >> 2003 >> Spectra Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1693: Mil Request Circuit Malfunction >> Test Procedure
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Test Procedure

  1. Turn ignition off. Disconnect TCM and ECM 81-pin connector. See Figure . TCM is located behind left side of dash. Thoroughly check ECM and TCM connectors for loose, bent or corroded connectors. Repair or replace any damaged connectors as necessary and go to next step.
  2. With ECM and TCM connectors still disconnected, measure the resistance of MIL request circuit between ECM connector terminal No. 22 (Yellow/Blue wire) and TCM connector terminal No. 27 (White/Blue wire). Also, measure the resistance circuit between ECM connector terminal No. 78 (Black/Yellow wire) and TCM connector terminal No. 28 (Black/Yellow wire). Resistance should be below one ohm. If resistance is as specified, go to next step. If resistance is not as specified, repair open circuit as necessary and go to step  5 .
  3. With ECM and TCM connectors still disconnected, measure resistance between ECM harness connector terminals No. 22 (Yellow/Blue wire), No. 78 (Black/Yellow wire) and ground. Each resistance should be infinite. If resistances are as specified, go to next step. If any resistance is not as specified, repair short as necessary and go to step  5 .
  4. With ECM and TCM connectors still disconnected, turn ignition on. Measure voltage of MIL request circuit between ECM connector terminal No. 22 (Yellow/Blue wire) and ground. Voltage should be below 0.5 volts. If voltage is as specified, go to next step. If voltage is not as specified, repair short to battery voltage as necessary and go to next step.
  5. 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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