DTC P2600: Coolant Pump Control Circuit / Open
WARNING: This page is about a different variant/trim than selected.
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: |
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| 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 | GO to PINPOINT TEST KU . | ||