Valve Relay
- Remove valve relay from HCU. Using an ohmmeter, measure resistance between valve relay terminals No. 85 and 86. See Fig 1
. Resistance should be 60-120 ohms. Check for continuity between terminals No. 30 and 87a. Continuity should exist. Check for continuity between terminals No. 30 and 87. Continuity should not exist.
- Using a 12-volt power source, connect positive lead to terminal No. 85, and negative lead to terminal No. 86. Check for continuity between terminals No. 30 and No. 87. Continuity should exist. Check for continuity between terminals No. 30 and No. 87a. Continuity should not exist. If relay does not test as specified, replace relay.
Courtesy of CHRYSLER CORP.