Hi, I have a very nice 2001 S80t6 with 69K miles. Just did the massive oil leak repair, along with timing belt, etc. Got the "Urgent Air Bag" message after removing radio without unhooking battery. Took car to shop and had message erased. Had them check all codes, and have ECM code 6110 (cooling fan relay signal missing). This signal comes from the single violet wire. Shop suggested I trace wire to ECM and do continuity test as well as a voltage test to ensure wire integrity. My questions is; how do I verify the right terminal once the ECM is removed to test the wire. My wiring diagram shows the violet wire as A:7 on the ECM.
Is there a diagram that shows the location of these connections so I get the right one?
2001 S80t6 Cooling fan relay, missing signal
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Biovince49
- Posts: 8
- Joined: 8 February 2015
- Year and Model: 2001 S80
- Location: Big Isalnd hawaii
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Biovince49
- Posts: 8
- Joined: 8 February 2015
- Year and Model: 2001 S80
- Location: Big Isalnd hawaii
I just did a resistance check of the temperature sensor in the thermostat housing. Tested it both hot and cold, and got proper readings, 2,500 ohms cold (20 deg c), 210 ohms at running temp (90 deg c) Waiting for ECU puller tool to arrive before I can check violet wire from it to the fan relay. Apparently if the wire proves good the next step is a rebuild/repair of the ECU. Anyone know of a reputable place to have that done? I don't feel good driving this car knowing the cooling fan is not operating properly. Any suggestions appreciated.
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