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Test TC-3A - No Cam Sync Signal At Pcm (DTC 54)

WARNING: This page is about a different car, the 1994 Plymouth Sundance and 1994 Dodge Shadow. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION TABLE. For wiring diagrams, see WIRING DIAGRAMS  .
  1. Using DRB, erase trouble codes. Attempt to start engine. If engine will not start, crank engine for at least 10 seconds. Using DRB, read trouble codes. If DRB displays NO CAM SYNC SIGNAL AT PCM, go to step 5). If DRB does not display NO CAM SYNC SIGNAL AT PCM, condition required to set trouble code message is not present at this time. Go to next step.
  2. The NO CAM SYNC SIGNAL AT PCM trouble code message sets if Powertrain Control Module (PCM) does not see a Camshaft Position (CMP) sensor signal with crankshaft position sensor signal present. Possible causes are: open CMP sensor Orange wire, open or shorted CMP sensor Tan/Yellow wire, open CMP sensor Black/Light Blue wire, failed CMP sensor, improperly adjusted CMP sensor or failed PCM. Go to next step.
  3. Inspect all related wiring and connectors and repair as necessary. If no problems were found with wiring and connectors, go to next step. If it was necessary to repair related wiring and connectors, perform TEST VER-2  .
  4. Start engine. Wiggle wiring harness from CMP sensor to PCM. If engine misfired or stalled, repair wiring harness as necessary. Perform TEST VER-2. If engine did not misfire or stall, see INACTIVE TROUBLE CODE CONDITION  . Perform TEST VER-2.
  5. Turn ignition off. Disconnect Camshaft Position (CMP) sensor connector. Turn ignition on. Put DRB in voltmeter mode. Using DRB, check voltage on CMP sensor connector Orange wire. If voltage is less than 7 volts, repair open in Orange wire. Perform TEST VER-2.
  6. If voltage is more than 7 volts, using DRB, check voltage on CMP sensor connector Tan/Yellow wire. If voltage is more than 4 volts, go to step 10).
  7. If voltage is less than 4 volts, turn ignition off. Disconnect PCM connector. Inspect PCM connector for damaged or pushed out terminals. Repair as necessary. Perform TEST VER-2. If PCM connector terminals are okay, go to next step.
  8. Turn ignition off. Using DRB, check resistance of PCM connector terminal No. 44 (Tan/Yellow wire). If resistance is less than 5 ohms, repair short to ground in Tan/Yellow wire. Perform TEST VER-2.
  9. If resistance is more than 5 ohms, using an external ohmmeter, check resistance of Tan/Yellow wire between CMP sensor connector harness side and PCM connector terminal No. 44. If resistance is more than 5 ohms, repair open in Tan/Yellow wire. Perform TEST VER-2. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2.
  10. Turn ignition off. Put DRB in ohmmeter mode. Using DRB, check resistance of CMP sensor connector Black/Light Blue wire. If resistance is more than 5 ohms, repair open in Black/Light Blue wire. Perform TEST VER-2  . If resistance is less than 5 ohms, replace CMP sensor. Perform TEST VER-2.
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