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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Controls - Tests W/Codes - 2.2L) >> Self-Diagnostic Tests >> Test TC-16A - Injector #4 Control Circuit (DTC 27)

Test TC-16A - Injector #4 Control Circuit (DTC 27)

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. Turn ignition off. Disconnect injector No. 4 connector (Light Blue/Brown and Dark Green/Black wires). Using an external ohmmeter, check injector resistance. If resistance is not 2-5 ohms, replace injector No. 2. Perform TEST VER-2  .
  2. If resistance is 2-5 ohms, turn ignition on. Using DRB, actuate injector No. 4. Using DRB, check voltage on injector No. 4 connector (Dark Green/Black wire). If voltage is less than 10 volts, repair open in Dark Green/Black wire. Perform TEST VER-2.
  3. If voltage is more than 10 volts, turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using an external ohmmeter, check resistance of Light Blue/Brown wire between injector No. 4 connector and PCM connector terminal No. 13. If resistance is more than 5 ohms, repair open in Light Blue/Brown wire. Perform TEST VER-2.
  4. If resistance is less than 5 ohms, put DRB in ohmmeter mode. Using DRB, check resistance of PCM connector terminal No. 13 (Light Blue/Brown wire). If resistance is less than 5 ohms, repair short to ground in Light Blue/Brown wire. Perform TEST VER-2. If resistance is more than 5 ohms, replace PCM. Perform TEST VER-2.
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