Power Supply and Ground Circuit Check

Power Supply Circuit Check
1. Disconnect smart entrance control unit harness connector.
2. Check voltage between smart entrance control unit harness connector M144 terminals 26 (PU), 27 (G), M145 terminal 49 (R/B) and ground.




Ground Circuit Check
1. Disconnect smart entrance control unit harness connector.
2. Check continuity between smart entrance control unit harness connector M144 terminal 43 (B), M145 terminal 64 (B) and ground.