CHECK ECM
Disconnect the A40 and B39 ECM connectors.
Measure the resistance and voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| A40-20 (BATT) - Body ground | P - Body ground | Power source circuit | Always | 11 to 14 V |
| A40-27 (IGSW) - Body ground | B - Body ground | IG power source circuit | Ignition switch ON | 11 to 14 V |
| Ignition switch off | Below 1 V | |||
| A40-14 (ASLM) - Body ground | LG - Body ground | Warning canceling switch signal | Warning canceling switch on | Below 1 Ω |
| Warning canceling switch off | 10 kΩ or higher | |||
| B39-105 (E1) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
| B40-32 (EC) - Body ground | W-B - Body ground |
If the result is not as specified, there may be a malfunction on the wire harness side.