ECA Electrical Switch Inputs: Notes
Check switch input voltages at ECA. If voltage readings are incorrect, check for opens, shorts or bad connections in wiring between switches and ECA. Repair as necessary. If all harnesses are okay, replace ECA.
ECA ELECTRICAL SWITCH VOLTAGE INPUTS
| Terminal | Condition | Volts |
|---|---|---|
| 1I | Headlight Switch On | 12-14 |
| 1I | Headlight Switch Off | 0-2.5 |
| 1J | Rear Defrost Switch On | 12-14 |
| 1J | Rear Defrost Switch Off | 0-2.5 |
| 1K | Cooling Fan On | 12-14 |
| 1K | Cooling Fan Off | 0-2.5 |
| 1H | Blower Switch High | 0-2.5 |
| 1H | Blower Switch Off | 12-14 |
| 2B | Brake Light Switch On | 12-14 |
| 2B | Brake Light Switch Off | 0-2.5 |
| 3B | A/C Switch & Blower On | 10-14 |
| 3B | A/C Switch & Blower Off | 0-2.5 |