Typical Enabling Conditions
CASE 1
| Monitor runs whenever following DTCs not stored | None |
| Current air pump heater relay (AIR PMP HTR) | ON |
| Last air pump heater relay (AIR PMP HTR) | ON |
| Battery voltage | 8 V or more |
| Engine switch | ON |
| Starter | OFF |
CASE 2
| Monitor runs whenever following DTCs not stored | None |
| Current air pump heater relay (AIR PMP HTR) | OFF |
| Last air pump heater relay (AIR PMP HTR) | OFF |
| Battery voltage | 8 V or more |
| Engine switch | ON |
| Starter | OFF |