Control Assembly: Testing and Inspection
Circuit TestingBlower Controls-Circuit Testing:
Step 1: Check Fuses
1. Check the "HEATER" fuse.
2. If the fuse is burned, check for a short-circuit in the wiring harness before replacing it.
3. If the fuse is OK, go to step 2.
Blower Controls-Circuit Testing:
Step 2: Measure Voltage at Blower Motor
1. Turn the ignition switch ON.
2. Turn the blower switch to "HI".
3. Measure the voltage at the following terminal wire of the blower motor connector.
Step 3: Measure Voltage at Resistor Assembly
1. Turn the ignition switch ON.
2. Turn the blower switch OFF and verify that the A/C switch is OFF.
3. Measure the voltage at the following terminal wires of the resistor assembly.
Step 4: Measure Voltage at Blower Switch
1. Turn the ignition switch ON.
2. Turn the blower switch to "HI."
3. Measure the voltage at the following terminal wire of the blower switch connector.
Step 5: Measure Voltage at Blower Switch
1. Turn the ignition switch ON.
2. Turn the blower switch and A/C switch OFF.
3. Measure the voltage at the following terminal wires of the blower switch connector.