| All values measured to ground unless otherwise noted | |||
| CAN H | CAN-Bus (high side). High speed data transfer bus input and output, shares data with other ECMs | No reliable test. Check continuity to other ECMs. Approx. 5 VAC when data is on bus | Also other ECMs can cause CAN-Bus DTCs |
| CAN L | CAN-Bus (low side). High speed data transfer bus input and output, shares data with other ECMs | Disconnect all CAN plugs from appropriate ECMs, check wiring for insulation resistance > 20 kOhms |
HHT is also used for CAN diagnosis |
| A1 | |||
| 2.B2 2.B1 |
CAN-Bus (high side) CAN-Bus (low side) |
Unplug connector 2 from IC, measure at plug across 2 and 1 approx. 60 Ohms |
|
| N3/10 | |||
| D.12 D.11 |
CAN-Bus (high side) CAN-Bus (low side) |
ECM disconnected, measure at ECM across D.12 and D.11 approx. 120 Ohms |
Engine 111 ME-SFI |
| N15/3 | |||
| 3.H 3.L |
CAN-Bus (high side) CAN-Bus (low side) |
ECM disconnected, measure at plug across H and L approx. 60 Ohms |
|
| N54/1 | |||
| 2.2 2.1 |
CAN-Bus (high side) CAN-Bus (low side) |
ECM disconnected, measure at ECM across 2 and 1 approx. 120 Ohms |
|
| N47-1, N47-2, N47-7 |
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| 3.H 3.L |
CAN-Bus (high side) CAN-Bus (low side) |
ECM disconnected, measure at plug across H and L approx. 60 Ohms |
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