Viper 4105v Causing SES Light

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zim2704

Member - Posts: 1

Joined: February 02, 2026

Location: Kansas, United States

Posted: May 02, 2026 at 12:04 PM / IP Logged

After installing the 4105v into my 1998 Chevrolet k1500 all functions work as they should but when using remote start it pops a Service engine soon light.

Diagnosing this shows I am getting no 12v power to ignition E when using the remote start but is just fine with the key. This is what powers the pcm/transmission and causes the transmission to go into limp mode and the SES light.

Checking all ignition wires at the unit

Pin1-red-12v constant key and remote start

Pin2-pink/white-not connected

Pin3-red-12v constant key and remote start

Pin4-orange- 12v upon start with key and remote start

Pin5-purple- 12v while cranking key and remote start

Pin6-pink- 12v upon start with key and remote start

What am I missing? Does the pink/white need tied in somewhere?

Do I need to be checking the harness voltages at another spot?

lee.lopez

Copper - Posts: 310

Joined: September 02, 2024

Location: Texas, United States

Posted: May 02, 2026 at 4:41 PM / IP Logged

Sounds like the white wire at the ignition harness needs to be connected to the pink/white of the Viper.

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