P2600 - Coolant Pump Control Circuit / Open

2007 Ford Escape Base, 2.3 Z, FWD, AutomaticSECTION P2600 - Coolant Pump Control Circuit / Open
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P2600 - COOLANT PUMP CONTROL CIRCUIT / OPEN

Description:  The powertrain control module (PCM) monitors the heater pump control relay (HPCR) primary circuit output. The test fails if the PCM grounds the HPCR circuit, and excessive current draw is detected on the HPCR circuit or, with the HPCR circuit not grounded by the PCM, voltage is not detected on the HPCR circuit. The PCM expects to detect VPWR voltage coming through the HPCR relay coil to the HPCR circuit.
Possible Causes: 
  • Damaged harness
  • Open or shorted HPCR circuit.
  • Open VPWR circuit to the HPCR relay
  • Damaged HPCR relay
Diagnostic Aids:  An open circuit or short to ground can only be detected when the PCM is not grounding the HPCR circuit. A short to voltage can only be detected when the PCM is grounding the HPCR circuit. During key on engine off (KOEO) and key on engine running (KOER) self-test, the HPCR circuit will be cycled on and off.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST KU .
RENDER: 1.0x

NO RELATED

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