| All values measured to ground unless otherwise noted | |||
| K40/4 | |||
| A1.1 | Ground to W16/6 | Approx. 0 Ohms to ground | via B2.5 |
| A1.2 | Ground to W16/6 | Approx. 0 Ohms to ground | via B2.5 |
| A1.3 | Circuit 87M1 power output, switched by relay K40/4k1. Supplies motor management components |
Ignition on 12 VDC | Feed from battery, fuse protected by K40/4f5 |
| A1.4 | Circuit 15 power output, supplies ignition coils | Ignition on 12 VDC | Feed from EIS ECM, fuse protected by K40/4f6 |
| A1.5 | Circuit 87M2 power output, switched by relay K40/4k1. Supplies motor management components |
Ignition on 12 VDC | Feed from battery, fuse protected by K40/4f4 |
| A1.6 | Circuit 50 starter activation output, switched by relay K40/4k2 | 12 VDC when starter turning | Controlled by engine ECM |
| A1.7 | Air pump voltage supply, switched by relay K40/4k3 | Feed from battery, fuse protected by K40/4f7 | |
| A2.1 | Pin not used | ||
| A2.2 | Air pump activation signal input, energizes relay K40/4k3 | Ignition on, 12 VDC to pin B2.4 (circuit 87M2) when pump is running | |
| A2.3 | Circuit D+ power output to charge indicator lamp A1e5 extinguishes when applied | see pin B1.6 | |
| B1.1 | Pin not used | ||
| B1.2 | Circuit 30z power output to diagnostic socket | 12 VDC at all times | Feed from battery, fuse protected by K40/4f1 |
| B1.3 | Air pump activation signal input, energizes relay K40/4k3 | Ignition on, 12 VDC to pin B2.4 (circuit 87M2) when pump is running | |
| B1.4 | Fuel pump activation signal input, energizes K27 | Ignition on 0.1-0.3 A current draw measure to pin A.2 12 VDC for approx. 1 sec. Start engine 12 VDC during start process and when engine is running |
Internally linked to pin F1.2 |
| B1.5 | Pin not used | ||
| B1.6 | Circuit D+ power input to charge indicator lamp A1e5 extinguishes when applied | Ignition on 12 VDC when engine is running, A1e5 not lit 0 VDC when engine is not running, A1e5 lit |
Internally linked to A2.3 |
| B1.7 | DTC diagnostic output also input for HHT data and test |
Ignition on 12 VDC, approx. 8 VAC when data transmission active |
Internally linked to pin H1.2 |
| B1.8 | DTC diagnostic input and output | Ignition on 12 VDC, approx. 8 VAC when data transmission active |
Internally linked to pin F1.1 |
| B1.9 | Ground to W16/4 | Approx. 0 Ohms to ground | |
| B1.10 | Circuit 87 M1 switched power input, switched by relay K40/4k2 | Ignition on 12 VDC | |
| B2.1 | Circuit 87 power output, switched by relay K40/4k1 | Ignition on 12 VDC | Feed from battery |
| B2.2 | Circuit 87M2 power output, switched by relay K40/4k1. Supplies motor management components |
Ignition on 12 VDC | Same as pin A1.5 |
| B2.3 | Circuit 87M1 power output, switched by relay K40/4k1. Supplies engine ECM |
Ignition on 12 VDC | Same as pin A1.3 |
| B2.4 | Circuit 87M2 power input, switched by relay K40/4k1 | Ignition on 12 VDC | Feed from pin B2.2 |
| B2.5 | Ground to W16/6 | Approx. 0 Ohms to ground | see pins A1.1,2 |
| C.1 | Circuit 30z main power input | 12 VDC at all times | Feed from battery |
| C.2 | Circuit 30z power output, supplies engine ECM | 12 VDC at all times | Feed from battery |
| C.3 | Circuit 15 power input | Ignition on 12 VDC | Feed from EIS ECM |
| C.4 | Circuit 30 main power input | 12 VDC at all times | Feed from battery |
| D.1-3 | Pins not used | ||
| E.1,2 | Pins not used | ||
| F1.1 | DTC diagnostic input and output | See pin B1.8 | |
| F1.2 | Fuel pump activation signal output, energizes K27 | See pin B1.4 | |
| F1.3 | Pin not used | ||
| F1.4 | Circuit 87 M1 switched power output, energizes K27 | see B1.10 | |
| F2.1,2 | |||
| F2.3 | Circuit 87 power output, switched by relay K40/4k1 | Ignition on 12 VDC | |
| F2.4 | Pin not used | ||
| F2.5 | Circuit 15 power input | see C.3 | |
| G.1,2 | Pins not used | ||
| H1.1 | Circuit 87 power output, switched by relay K40/4k1 | Ignition on 12 VDC | Fuse protected by K40/4f2. Internally linked to pin H2 |
| H1.2 | DTC diagnostic output also input for HHT data and test |
See pin B1.7 | |
| H2 | Circuit 87 power output, switched by relay K40/4k1 | Ignition on 12 VDC | Same as pin H1.1 |
| I.1 | Starter activation ground signal input, energizes relay K40/4k2 | Ignition on 0 VDC 12 VDC when starter turning |
|
| I.2 | Circuit 87M1 power input | Ignition on 12 VDC | Feed from K40/4k1 |