Heating Mat Inoperative
DIAGNOSIS REFERENCE CHART - HEATING MAT INOPERATIVE
| Step | Action | Value (s) | Yes | No |
|---|---|---|---|---|
| 1 | Check the heating mat. Does the heating mat work? |
- | System OK | Go to Step 2 |
| 2 | Check the fuse F20. Is fuse F20 blown? |
- | Go to Step 3 | Go to Step 4 |
| 3 |
Is the repair complete? |
- | System OK | - |
| 4 | Use a voltmeter to check voltage at terminal 5 of the each (Left and Right) heating mat switch. Does the voltmeter indicate the specified value? |
11 - 14 V | Go to Step 6 | Go to Step 5 |
| 5 | Repair the open circuit between the fuse F20 and the heating mat switch terminal 5. Is the repair complete? |
- | System OK | - |
| 6 |
Does the voltmeter indicate the specified value? |
11 - 14 V | Go to Step 8 | Go to Step 7 |
| 7 | Replace the heating mat switch. Is the repair complete? |
- | System OK | - |
| 8 |
Does the voltmeter indicate the specified value? |
11 - 14 V | Go to Step 10 | Go to Step 9 |
| 9 | Repair the open circuit between the Left or Right heating mat switch terminal 2 and the Left or Right heating mat terminal 1. Is the repair complete? |
- | System OK | - |
| 10 |
Is the voltage indicate the specified value? |
11 - 14 V | Go to Step 12 | Go to Step 11 |
| 11 | Replace the Left or Right heating mat. Is the repair complete? |
- | System OK | - |
| 12 | Replace the open ground circuit. Is the repair complete? |
- | System OK | - |