Pinout for CAN high and CAN low?

ANDRIN ATEM

MEMBER
2008 JEEP LIBERTY
3.7L
6 CYL
12,560 MILES

Hi, please I like to have the Pinout for can high and can low for the immobilizer unit antenna. I have actually done a resistant test but I can seem to find 60 ohms on the two wires for can. But I have power and ground.

Please can you help me with a diagram that clearly points out the can wires and pinouts for the 7 wires connector to the immobilizer unit. Vin 1J8GN28KX8W251790.

I will truly appreciate if I have a bloc diagram of all modules on network. From the image below, just 5 modules appear on the network.

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Wednesday, April 8th, 2026 AT 6:59 AM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
55,450 POSTS

So I can tell you the TIPM have a high failure rate, FYI, here are the wiring diagrams which show the high and low CAN for the security system. I would try to find a used TIPM on ebay. Check out the images (below). Let us know how it goes

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Thursday, April 9th, 2026 AT 6:36 AM

ANDRIN ATEM

MEMBER
422 POSTS

Thank you Ken, it’s always a pleasure getting feedbacks from you. However had already done the preliminary checks on the can high and low on all ends. I noticed the can high and low reads normal show the network is alive, system is not shorted because I get 60 ohms of resistance, both can reads. But a section of the network is not visible. So this must be an internal fault from the central gateway module. May I have the bloc diagram of modules? Just to see what am missing.

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Thursday, April 9th, 2026 AT 10:42 AM

KEN L