Blower not working on high fan speed
- Thread starter Aggiesrok
- Start date
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stamp11127
Full Access Members
In the battery junction box check fuse 30 (10amp) for power on each test point. Fuse is hot at all times. This feeds power to the ac clutch relay.
How are you reading wiring diagrams? If you are ok with them, send me an email address.
How are you reading wiring diagrams? If you are ok with them, send me an email address.
stamp11127
Full Access Members
Voltage on both sides of the fuse indicates the ac relay isn't getting the signal to "close". The resistance on the coil shows that it isn't "open" and will engage the clutch when power is applied.
You can pull the relay, jump 3 to 5 with a jumper wire that will handle the 10a and test the compressor clutch operation with the engine running.
Also check fuse F79 10a in the battery junction box and charging voltage at the battery posts with the engine running at idle.
You can pull the relay, jump 3 to 5 with a jumper wire that will handle the 10a and test the compressor clutch operation with the engine running.
Also check fuse F79 10a in the battery junction box and charging voltage at the battery posts with the engine running at idle.
Fuse 79 is good.
Relay 23 unplugged. Key off 12v at 3.
Key on 12v at 1 & 3 and 3.5v at 2. Relay works testing with battery.
stamp11127
Full Access Members
Next step is to check the ac system pressure with a set of gauges. The pressure transducer may be sensing low pressure in the system.
stamp11127
Full Access Members
Sealed system, so it is probably a leak. O-rings, condenser, hose(s), or compressor shaft seal are the usual culprits
