| All values measured to ground unless otherwise noted | |||
| K40/2 | |||
| C1.1 | Circuit 15R power input, switched by EIS ECM | 12 VDC with key in steering lock position "1" | Feed via Z3/27 |
| C1.2,3 | Circuit 30 main power input | 12 VDC at all times | Feed from battery via X4 |
| C1.4 | Main ground to W1 | Approx. 0 Ohms to ground | |
| C2.1 | Circuit 30 power input for HCS | 12 VDC at all times | Feed from battery via X4 |
| C2.2 | Circuit 15 power input, switched by EIS ECM | 12 VDC with key in steering lock position "2" | Internally linked to pin M2.1 |
| C3.1-4 | Pins not used | ||
| C3.5 | Switched ground signal input (logic level), activates left side water valve | Approx. 12 VDC when valve closed, approx. 0 VDC when valve opened |
Internally linked to pin M4.8 |
| C3.6 | Switched ground signal input (logic level), activates right side water valve | Approx. 12 VDC when valve closed, approx. 0 VDC when valve opened |
Internally linked to pin M4.7 |
| C3.7 | Switched power input | Ignition on 12 VDC | Feed from A/C pushbutton module. Internally linked to pin M4.6 |
| C3.8 | Switched ground signal input, activates circulation pump | Ignition off. Approx. 2-4 Ohms between pins C3.7 and C3.8. Check motor. Pump runs when grounded (ignition on) |
Internally linked to pin M4.5 |
| C3.9 | "Diagnostic port" for DTC readout and diagnostic purpose | No reliable test | To be tested with HHT. Internally linked to pin M4.4 |
| C3.10 | Circuit 50 signal input | < 1 VDC to pin C1.2 (circuit 30) with key held in starting position | Feed from EIS ECM. Internally linked to pin M4.3 |
| C3.11,12 | Pins not used | ||
| C4.1 | Pin not used | ||
| C4.2 | Voltage input, activates A/C compressor | A/C system on: Defrost on, EC off: 12 VDC with A/C compressor on 0 VDC with A/C compressor off |
Internally linked to pin M5.11 |
| C4.3 | Refrigerant pressure sensor signal output, used to protect A/C compressor when pressure drops | NTC. Decreasing resistance with increasing temperature. Approx. 13 kOhms at 20 °C, approx. 2 kOhms at 70 °C |
Internally linked to pin M5.10 |
| C4.4 | Voltage input, supplies refrigerant pressure sensor | Ignition on, 5 VDC. | Internally linked to pin M5.9 |
| C4.5 | Refrigerant temperature sensor signal output, used to protect A/C compressor when temperature raises | NTC. Decreasing resistance with increasing temperature. Approx. 13 kOhms at 20 °C, approx. 2 kOhms at 70 °C |
Internally linked to pin M5.8 |
| C4.6 | Emission sensor signal output, sets automatic recirculation mode | No reliable test. Ignition on, wait at least 60 seconds. Approx. 5 VAC |
Internally linked to pin M5.7 |
| C4.7,8 | Pins not used | ||
| C4.9 | Sensors common ground input for A/C system sensors | Approx 0 Ohms to ground | Feed from A/C ECM Internally linked to pin M5.3,4,5 |
| C4.10 | "Diagnostic port" for DTC readout and diagnostic purpose | No reliable test | To be tested with HHT. Internally linked to pin M4.12 |
| C4.11,12 | Pins not used | ||
| M1 | Traction system return pump voltage supply, switched by relay K40/2k4 | 12 VDC with relay activated | |
| M2.1 | Circuit 15 power output | See pin C2.2 | |
| M2.2 | Circuit 87 F fanfare horns power supply, switched by relay K40/2k6 | Ignition on 12 VDC with fanfare horns activated | Feed from battery, fuse protected by K40/2f4 |
| M3.1 | Traction system return pump relay activated monitoring signal output | 12 VDC with relay activated | |
| M3.2 M3.3 |
Return pump relay common input signal input, activates relay K40/2k4 |
12 VDC to pin M3.3 with relay activated |
Coil resistance approx. 40-80 Ohms |
| M4.1 | Circuit 15 power output to heated windshield washer system | 12 VDC with key in steering lock position "2" | |
| M4.2 | Pin not used | ||
| M4.3 | Circuit 50 signal output to engine ECM | See pin C3.10 | |
| M4.4 | "Diagnostic port" for DTC readout and diagnostic purpose | See pin C3.9 | |
| M4.5 | Switched ground signal output, activates circulation pump | See pin C3.8 | |
| M4.6 | Switched power output | See pin C3.7 | |
| M4.7 | Switched ground signal output (logic level), activates right side water valve | See pin C3.6 | |
| M4.8 | Switched ground signal output (logic level), activates left side water valve | See pin C3.5 | |
| M4.9 | Engine/air conditioning cooling fan control voltage input | Engine at idle, ECT < 70 °C 1.0-1.9 VDC, fan not running A/C on 2.0-6.0 VDC, fan running ECT > 85 °C 2.5-12 VDC, fan speed varies |
|
| M4.10 M4.11 |
Windshield washer pump voltage supply not used high side |
Ignition on, press and hold S4s4 to resistance point 12 VDC |
Feed from S4s4 via CAN |
| M4.12 | "Diagnostic port" for DTC readout and diagnostic purpose | See pin C4.10 | |
| M5.1,2 | Pins not used | ||
| M5.3-5 | Sensors common ground input for A/C system sensors | See pin C4.9 | |
| M5.6 | Pin not used | ||
| M5.7 | Emission sensor signal input, sets automatic recirculation mode | See pin C4.6 | |
| M5.8 | Refrigerant temperature sensor signal input, used to protect A/C compressor when temperature raises | See pin C4.5 | |
| M5.9 | Voltage output, supplies refrigerant pressure sensor | See pin C4.4 | |
| M5.10 | Refrigerant pressure sensor signal input, used to protect A/C compressor when pressure drops | See pin C4.3 | |
| M5.11 | Voltage output, activates A/C compressor | See pin C4.2 | |
| M5.12 | Pin not used | ||
| M6.1 | Circuit 30 power output to washer pump | 12 VDC for approx. 1 sec. when HCS activated | |
| M6.2 | Circuit 30 power output to wiper pump | 12 VDC for approx. 1 sec. when HCS activated | |
| M7.1 | Wiper arm "Parked" recognition, switched ground input | Ignition on 12 VDC to pin C1.2 (circuit 30) |
|
| M7.2 | Ground output power, low side of wiper motor | Approx. 0 Ohms to ground | |
| M7.3 | Normal wipe mode power output, activates wiper motor | Ignition on, S4 to pos II 12 VDC | |
| M7.4 | Fast wipe mode power output, activates wiper motor | Ignition on, S4s5 to pos III 12 VDC | |
| M8 | Pin not used | ||
| M9.1,2 | Pins not used | ||
| SAM | Fixed connection to SAM ECM | ||