Auxiliary Blower Motor Malfunction C69
Step | Action | Value | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The auxiliary blower motor operates in at least one, but not all, speed positions. | ||||
1 | Did you perform the HVAC Diagnostic System Check ? | -- | Go to Step 2 | |
2 |
Does the auxiliary blower motor operate at the desired speeds? | -- | Go to Step 3 | Go to Step 4 |
3 |
Does the auxiliary blower motor operate at the desired speeds? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 17 |
4 |
Does the test lamp illuminate in each speed position? | -- | Go to Step 5 | Go to Step 6 |
5 | Test the ignition 3 voltage circuit of the auxiliary blower motor for a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 25 |
6 | Does the test lamp illuminate in the maximum speed position? | -- | Go to Step 11 | Go to Step 7 |
7 | Test the ignition 3 voltage circuit of the auxiliary blower motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 8 |
8 |
Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 10 |
9 | Test the ground circuit of the auxiliary blower motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 22 |
10 | Test the high blower motor control circuit of the auxiliary blower motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 24 |
11 |
Does the resistance measure near the specified value? | 0 ohms | Go to Step 13 | Go to Step 12 |
12 | Test the auxiliary medium 1/2 blower motor control circuit of the auxiliary blower motor resistor assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 22 |
13 |
Does the test lamp illuminate? | -- | Go to Step 14 | Go to Step 15 |
14 |
Does the test lamp illuminate? | -- | Go to Step 23 | Go to Step 16 |
15 | Test the auxiliary blower motor low speed control circuit of the auxiliary blower motor resistor assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 24 |
16 | Test the auxiliary blower motor medium speed control circuit of the auxiliary blower motor resistor assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 24 |
17 | Does the auxiliary blower motor operate at all from the rear auxiliary blower motor switch? | -- | Go to Step 21 | Go to Step 18 |
18 |
Does the test lamp illuminate? | -- | Go to Step 20 | Go to Step 19 |
19 | Test the auxiliary blower motor speed control circuit of the auxiliary HVAC control module for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 24 |
20 | Test the auxiliary blower motor switch supply voltage circuit of the auxiliary HVAC control module for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 26 |
21 | Test each auxiliary blower motor speed control circuit of the auxiliary HVAC control module for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 26 |
22 | Inspect for poor connections at the harness connector of the auxiliary blower motor relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 27 |
23 | Inspect for poor connections at the harness connector of the auxiliary blower motor resistor assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 28 |
24 | Inspect for poor connections at the harness connector of the front auxiliary blower motor switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 29 |
25 | Inspect for poor connections at the harness connector of the auxiliary blower motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 30 |
26 | Inspect for poor connections at the harness connector of the auxiliary HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 32 | Go to Step 31 |
27 | Replace the auxiliary blower motor relay. Did you complete the replacement? | -- | Go to Step 32 | -- |
28 | Replace the auxiliary blower motor resistor assembly. Refer to Auxiliary Blower Motor Resistor Assembly Replacement . Did you complete the replacement? | -- | Go to Step 32 | -- |
29 | Replace the front auxiliary blower motor switch. Refer to Front Auxiliary Blower Motor Switch Replacement . Did you complete the replacement? | -- | Go to Step 32 | -- |
30 | Replace the auxiliary blower motor. Refer to Auxiliary Blower Motor Replacement . Did you complete the replacement? | -- | Go to Step 32 | -- |
31 | Replace the auxiliary HVAC control module. Refer to Auxiliary Heater and Air Conditioning Control Module Replacement . Did you complete the replacement? | -- | Go to Step 32 | -- |
32 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
Auxiliary Blower Motor Malfunction C69 with U32
Step | Action | Value | Yes | No |
|---|---|---|---|---|
Schematic Reference: HVAC Schematics Connector End View Reference: HVAC Connector End Views DEFINITION: The auxiliary blower motor operates in at least one, but not all, speed positions. | ||||
1 | Did you perform the HVAC Diagnostic System Check ? | -- | Go to Step 2 | |
2 |
Does the auxiliary blower motor operate at the desired speeds? | -- | Go to Step 3 | Go to Step 4 |
3 |
Does the auxiliary blower motor operate at the desired speeds? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 17 |
4 |
Does the test lamp illuminate in each speed position? | -- | Go to Step 5 | Go to Step 6 |
5 | Test the ignition 3 voltage circuit of the auxiliary blower motor for a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 24 |
6 | Does the test lamp illuminate in the maximum speed position? | -- | Go to Step 11 | Go to Step 7 |
7 | Test the ignition 3 voltage circuit of the auxiliary blower motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 8 |
8 |
Does the test lamp illuminate? | -- | Go to Step 9 | Go to Step 10 |
9 | Test the ground circuit of the auxiliary blower motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 21 |
10 | Test the high blower motor control circuit of the auxiliary blower motor relay for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 23 |
11 |
Does the resistance measure near the specified value? | 0 ohms | Go to Step 13 | Go to Step 12 |
12 | Test the auxiliary medium 1/2 blower motor control circuit of the auxiliary blower motor resistor assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 21 |
13 |
Does the test lamp illuminate? | -- | Go to Step 14 | Go to Step 15 |
14 |
Does the test lamp illuminate? | -- | Go to Step 22 | Go to Step 16 |
15 | Test the auxiliary blower motor low speed control circuit of the auxiliary blower motor resistor assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 23 |
16 | Test the auxiliary blower motor medium speed control circuit of the auxiliary blower motor resistor assembly for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 23 |
17 | Does the auxiliary blower motor operate at all from the rear auxiliary blower motor switch? | -- | Go to Step 20 | Go to Step 18 |
18 |
Does the test lamp illuminate? | -- | Go to Step 25 | Go to Step 19 |
19 | Test the auxiliary blower motor control circuit of the auxiliary HVAC control module for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 23 |
20 | Test each auxiliary blower motor speed control circuit of the auxiliary HVAC control module for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 25 |
21 | Inspect for poor connections at the harness connector of the auxiliary blower motor relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 26 |
22 | Inspect for poor connections at the harness connector of the auxiliary blower motor resistor assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 27 |
23 | Inspect for poor connections at the harness connector of the front auxiliary blower motor switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 28 |
24 | Inspect for poor connections at the harness connector of the auxiliary blower motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 29 |
25 | Inspect for poor connections at the harness connector of the auxiliary HVAC control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 31 | Go to Step 30 |
26 | Replace the auxiliary blower motor relay. Did you complete the replacement? | -- | Go to Step 31 | -- |
27 | Replace the auxiliary blower motor resistor assembly. Refer to Auxiliary Blower Motor Resistor Assembly Replacement . Did you complete the replacement? | -- | Go to Step 31 | -- |
28 | Replace the front auxiliary blower motor switch. Refer to Front Auxiliary Blower Motor Switch Replacement . Did you complete the replacement? | -- | Go to Step 31 | -- |
29 | Replace the auxiliary blower motor. Refer to Auxiliary Blower Motor Replacement . Did you complete the replacement? | -- | Go to Step 31 | -- |
30 | Replace the auxiliary HVAC control module. Refer to Auxiliary Heater and Air Conditioning Control Module Replacement or VES Overhead Console Replacement . Did you complete the replacement? | -- | Go to Step 31 | -- |
31 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
