Bosch 221-122-001 Coil Resistance

Ignition Coil With Resistor For Engines

Run engine to operating temperature oil temperature about 80 to 90 C 176 to 194 F . Unlike capacitor discharge ignition systems, testing equipment e.g. tachometer can be connected to ignition coil terminals 1 and 15 of transistorized ignition coil systems. 2. Connect engine tester or timing light and tachometer. A positive terminal for connection of testing equipment is located above ignition control unit in engine compartment. 3. Detach both vacuum hoses at distributor. 4, Adjust ignition...

LHEZKDiagnosis Troubleshooting

Trouble Shooting Power Supply

Porsche Aktiengesellschaft Test point Description Page Precautions, Groups Important vehicle information, Groups Testing requirements, Groups Control unit Effect of faults cross-reference Fault Plug connections at LH control 1 Power 2 Idle speed 3 Full load 4 Engine temperature sensor 5 Air mass 6 Idle speed control 7 Oxygen regulation control, 8 Oxygen regulation control, 9 Open circuit at oxygen 10 Fuel injection circuit shut 11 Control unit 12 No power 13 Ground and plug 14...