C-15, Blower Controller Command Circuit
| C-15, Blower Controller Command Circuit |
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| Test | Work Order Description | Nominal Value |
| T01 | Check: Short to Voltage/Ground/Interruption of Voltage Supply | |
| Ignition OFF Disconnect wiring harness connector from: U28 Adjustment Unit ASM - Electronic Climate Control Measure voltage between the following terminals: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Ground | less than 0.1 V |
| Yes: T02 | No: E09 |
| T02 | Check: Short to Voltage/Ground of Voltage Supply Circuit | |
| Ignition ON Ignition key in ignition lock position II Measure voltage between the following terminals: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Ground | greater than 11.5 V |
| Yes: T03 | No: T04 |
| T03 | Check: Component | |
| Ignition key in ignition lock position III Measure voltage between the following terminals: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Ground | less than 0.1 V |
| Yes: E01 | No: E02 |
| T04 | Check: Short to Ground/Interruption of Voltage Supply Circuit | |
| Disconnect wiring harness connector from: M10 Motor - Blower, Air Conditioning Measure voltage between the following terminals: M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal A & Ground | greater than 11.5 V |
| Yes: T05 | No: E08 |
| T05 | Check: Short to Voltage/Interruption of Voltage Supply Circuit | |
| Measure voltage between the following terminals: M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal A & M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal B | greater than 11.5 V |
| Yes: T06 | No: E07 |
| T06 | Check: Short to Ground of Signal Circuit | |
| Ignition OFF Disconnect wiring harness connector from: Blower control unit Measure resistance between the following terminals: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Ground | greater than 100 kOhm |
| Yes: T07 | No: E06 |
| T07 | Check: Interruption of Signal Circuit | |
| Measure resistance between the following terminals: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Blower control unit Wiring Harness Connector (wiring harness side) Terminal A1 | less than 2 Ohm |
| Yes: T08 | No: E05 |
| T08 | Check: Component | |
| Connect wiring harness connector to: M10 Motor - Blower, Air Conditioning Connect fused jumper wire to: Blower control unit Wiring Harness Connector (wiring harness side) Terminal A2 & Blower control unit Wiring Harness Connector (wiring harness side) Terminal A4 Connect fused jumper wire to: Blower control unit Wiring Harness Connector (wiring harness side) Terminal B1 & Blower control unit Wiring Harness Connector (wiring harness side) Terminal B5 Ignition ON | Blower operates at maximum performance |
| Yes: E03 | No: E04 |
| C-15, Blower Controller Command Circuit |
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| Result | Cause Of Fault |
| E01 | Defective component: U28 Adjustment Unit ASM - Electronic Climate Control or Blower control unit |
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| E02 | Defective component: K6 Relay - Air Conditioning |
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| E03 | Defective component: Blower control unit |
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| E04 | Circuit interruption between: M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal B & Blower control unit Wiring Harness Connector (wiring harness side) Terminal B1/A2 or M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal A & |
| Blower control unit Wiring Harness Connector (wiring harness side) Terminal A4/B5 or Defective component: M10 Motor - Blower, Air Conditioning |
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| E05 | Circuit interruption between: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Blower control unit Wiring Harness Connector (wiring harness side) Terminal A1 |
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| E06 | Short circuit to ground between: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & Blower control unit Wiring Harness Connector (wiring harness side) Terminal A1 |
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| E07 | Short circuit to voltage/interruption of circuit between: M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal B & Ground |
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| E08 | Short circuit to ground/interruption of circuit between: M10 Motor - Blower, Air Conditioning Wiring Harness Connector (wiring harness side) Terminal A & K6 Relay - Air Conditioning Wiring Harness Connector (wiring harness side) Terminal 8 or Defective component: K6 Relay - Air Conditioning |
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| E09 | Short circuit to voltage between: U28 Adjustment Unit ASM - Electronic Climate Control Wiring Harness Connector (wiring harness side) Terminal 17 (26P) & K6 Relay - Air Conditioning Wiring Harness Connector (wiring harness side) Terminal 8 or Defective component: K6 Relay - Air Conditioning |
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