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Blower Motor Malfunction

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
Step Action Yes No
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2 Check the blower.
Does the blower run at any speed?		 Go to Step 14  Go to Step 3 
3
  1. Disconnect the power connector from the blower motor under the dashboard on the passenger side of the vehicle.
  2. Turn the ignition ON.
  3. Turn the blower ON.
  4. Test for 12-volts on the connector. The terminal connected to the violet wire is positive and the terminal connected to the black wire is negative.
Is this voltage present?		 Go to Step 4  Go to Step 5 
4 Replace the blower motor.
Is the repair complete?		 System OK -
5 Check fuse F19 in the passenger compartment fuse block.
Is the fuse blown?		 Go to Step 6  Go to Step 7 
6
  1. Turn the ignition ON.
  2. Use a short detector to locate a possible short in the following locations:
    • From the fuse panel to the blower speed switch
    • From the blower speed switch to the heater resistor block
    • From the heater resistor block to the blower motor
    • From the blower speed switch to the blower HI relay
  3. Repair any short.
  4. Replace any blown fuse.
Is the repair complete?		 System OK -
7
  1. Turn the ignition ON.
  2. Set the blower switch on 4.
  3. Check the blower motor ground.
Is ground OK?		 Go to Step 9  Go to Step 8 
8 Repair the blower motor ground.
Is the repair complete?		 System OK -
9 Check the motor connector with a 12-volt test light.
Does the test light come on?		 Go to Step 10  Go to Step 11 
10 Repair the open in the feed wire from the resistor block to the blower motor.
Is the repair complete?		 System OK -
11 Use the 12-volt test light to check the power feed terminal on the blower speed switch.
Does the light come on?		 Go to Step 12  Go to Step 13 
12 Replace the blower speed switch.
Is the repair complete?		 System OK -
13 Repair the open in the power wire from the blower speed switch to the fuse panel.
Is the repair complete?		 System OK Go to Step 14 
14 Check the blower operation at speed 4.
Does the blower fail to operate at speed 4?		 Go to Step 15  Go to Step 21 
15 Check fuse EF8 in the engine fuse compartment.
Is the fuse blown?		 Go to Step 16  Go to Step 17 
16
  1. Turn the ignition ON.
  2. Turn the blower motor switch to 4.
  3. Use a short detector to locate a possible short in the following locations:
    • From the engine fuse panel to the blower HI relay
    • From the blower HI relay to the blower motor
  4. Repair any short.
  5. Replace the EF8 fuse.
Is the repair complete?		 System OK -
17
  1. Turn the ignition switch ON.
  2. Turn the blower motor switch to 4.
  3. Check for 12-volts on the blower HI relay coil terminal from the blower speed switch terminal B3.
Is this voltage present?		 Go to Step 18  Go to Step 19 
18 Replace the blower speed switch.
Is the repair complete?		 System OK -
19
  1. Turn the ignition OFF.
  2. Check for opens in the following locations:
    • EF8 to the blower HI relay
    • Blower speed switch to the blower HI relay
    • Blower HI relay to ground
    • Blower HI relay to the blower motor
  3. Repair any opens.
Is the repair complete?		 System OK Go to Step 20 
20 Replace the blower HI relay.
Is the repair complete?		 System OK -
21
  1. Disconnect the resistor block connector.
  2. Connect one lead of a self-powered test light to any single lead on the resistor block. Use the other lead to probe each of the other 2 terminals.
Does the test light illuminate on all terminals?		 Go to Step 23  Go to Step 22 
22 Replace the resistor block.
Is the repair complete?		 System OK -
23
  1. Turn the ignition to LOCK.
  2. Disconnect the connector from the resistor block.
  3. Connect a jumper lead from the positive terminal on the battery to any wire terminal in the connector.
  4. Use a 12-volt test light to check for voltage from the corresponding wire on the blower speed switch.
  5. Repeat the same test on the other wires.
Does the lamp light on all 3 wires?		 Go to Step 25  Go to Step 24 
24 Replace the blower speed switch.
Is the repair complete?		 System OK -
25 Repair the open in the affected wire.
Is the repair complete?		 System OK -
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