How to Solve Coolant Pump 2 Open Circuit?

1 Answers
VonColton
07/30/25 3:45am
Coolant Pump 2 is an auxiliary water pump located not far from the main water pump, used for continued heat dissipation after engine shutdown. An open circuit in Coolant Pump 2 indicates a malfunction that requires inspection or replacement. The steps are as follows: 1. First, check whether the small water pump under the wiper cover is damaged. If it is, replace it. 2. Inspect the air conditioning control solenoid valve to determine if there is a wiring open circuit or if the solenoid valve itself is damaged. The wiring harness connects directly to the engine solenoid valve via a plug. If faulty, replace the air conditioning control solenoid valve or the wiring harness.
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