bosch 35 pin early motronic pinout (bmw 5,6,7)

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Page 1: Bosch 35 Pin Early Motronic Pinout (Bmw 5,6,7)

Pin Tables Copyright Equiptech

NumberNumber ofof ECMECM pins:pins: 3535

PinPin ConnectionConnection TestTest conditioncondition Volts/DutyVolts/Duty CycleCycle etcetc1 coil negative: t1 ignition on nbv

cranking/running 200 mindynamic volt drop 2.0 max

2 TS idle contact : t2 ignition on/runningthrottle closed zerothrottle part/fully open 5.0 ± 0.1

3 TS full-load contact : t3 ignition on/runningthrottle closed/part open 5.0 ± 0.1throttle fully open zero

4 starter motor : t50 cranking nbv5 earth ignition on/running 0.25 max6 AFS return: t4 ignition on/running 0.25 max7 AFS output : t2 ignition on 0.20 to 0.60

Idle 0.50 to 0.602000 rpm 0.75 to 1.003000 rpm 1.20 to 2.50snap accelerate 3.00 to 4.50

8 RPM sensor signal : t2 cranking: AC 2.5v+ (peak to peak)Idle: AC 11.0v+ (peak to peak)cruise: AC 14.0v+ (peak to peak)

9 AFS supply: t3 ignition on/running 5.0 ± 0.110 earth (auto only) ignition on/running 0.25 max11 fuel consumption gauge12 unused13 CTS signal : t2 ignition on/running 20°C 3.00 to 3.50

80°C 1.00 to 1.3014 injectors 1 to 3 (pulse): t1 ignition on nbv

cranking cold 4.0+ msrunning cold 4.0 mscranking warm 2.5+ msrunning warm 2.5 mssnap acceleration 6.0+ ms

15 injectors 4 to 6 (pulse): t1 ignition on nbvcranking cold 4.0+ msrunning cold 4.0 mscranking warm 2.5+ msrunning warm 2.5snap acceleration 6.0+ ms

16 earth ignition on/running 0.25 max17 earth ignition on/running 0.25 max18 unused19 earth ignition on/running 0.25 max20 pump relay driver: t85 ignition on nbv

cranking/running 1.25 max21 tachometer22 ATS: (AFS: t5) ignition on/running 20°C 2.00 to 3.0023 RPM sensor shield : t3 cranking/running 0.25 max24 unused25 TDC sensor return : t1 cranking/running 0.25 max26 TDC sensor signal : t2 cranking: AC 4.0v+ (peak to peak)

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Page 2: Bosch 35 Pin Early Motronic Pinout (Bmw 5,6,7)

Pin Tables Copyright Equiptech Idle: AC 11.0v+ (peak to peak)cruise: AC 14.0v+ (peak to peak)

27 RPM sensor return : t1 cranking/running 0.25 max28 A/C29 A/C30 unused31 unused32 unused33 ISCV pulse : t5 ignition on nbv

engine running duty cycle 69%34 ISCV pulse : t3 ignition on nbv

engine running duty cycle 31%35 supply from main relay: t87 ignition on/running nbv

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