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Home >> Eagle >> 1996 >> Talon Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Non-Turbo >> Trouble Code Tests >> Test TC-1A - No Cam Signal At Pcm

Test TC-1A - No Cam Signal At Pcm

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  Directory. For wiring diagram, see WIRING DIAGRAMS article.
  1. Turn ignition off. Disconnect Camshaft Position (CMP) sensor connector. CMP sensor is located on end of cylinder head.
  2. Turn ignition on. Using scan tool in voltmeter mode, check voltage on CMP sensor connector (harness side) 8-volt supply circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table.
    CMP SENSOR CONNECTOR WIRE IDENTIFICATION

    Application Wire Color
    CMP 8-Volt Supply Circuit Yellow
    CMP Signal Circuit Dark Blue/Red
    CMP Ground Circuit Black/Dark Green
  3. If voltage is more than 7 volts, go to next step. If voltage is 7 volts or less, repair 8-volt supply circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table.
  4. Turn ignition off. Connect a jumper wire to CMP sensor signal circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table. Turn ignition on. Using scan tool, note CMP sensor signal state. While observing scan tool display, tap other end of jumper wire to CMP sensor ground circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table.
  5. If a CMP signal is detected, replace CMP sensor. Perform TEST VER-2A. If a CMP signal is not detected, turn ignition off. Using scan tool in ohmmeter mode, check resistance of CMP sensor ground circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open CMP sensor ground circuit. Perform TEST VER-2A.
  6. Disconnect Powertrain Control Module (PCM) connectors. Using an external ohmmeter, check resistance of CMP signal circuit between CMP sensor connector and PCM connector. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table and PCM TERMINAL 33 CONNECTOR WIRE IDENTIFICATION table. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open CMP signal circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION  table. Perform TEST VER-2A.
    PCM TERMINAL 33 CONNECTOR WIRE IDENTIFICATION

    Application Wire Color
    PCM Terminal No. 33 (Camshaft Position Sensor Signal Circuit) Dark Blue/Red
  7. Using scan tool in ohmmeter mode, check resistance of CMP signal circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION  table. If resistance is 5 ohms or less, repair short to ground in CMP signal circuit. See CMP SENSOR CONNECTOR WIRE IDENTIFICATION table. Perform TEST VER-2A. If resistance is more than 5 ohms, replace PCM. Perform TEST VER-2A.
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