PTC Heater Circuit Troubleshooting
Measure the voltage between the PTC heater core 7P connector terminal No. 3 and body ground.
Is there battery voltage?
YES
-
Go to
Step 10
.
NO
-
Repair open in the wire between the under-hood fuse/relay box and the PTC heater core.
If the wire is OK, replace the under-hood fuse/relay box.
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