10C
Inspection of Immobilizer Control Module and Its Circuit
Voltage Inspection
Immobilizer Control Module (1) can be checked at wiring connector (2) by measuring voltage.
CAUTION:
Immobilizer Control Module cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to Immobilizer Control Module with coupler disconnected from it.
NOTE:
As the battery voltage affects each terminal voltage, confirm that it is 11 V or more when ignition switch is turned to ON position.
Connector Terminal Circuit Normal Voltage Condition
G46 11 BLU Communication line between coil antenna and Immobilizer Control Module About 12.0 V Always
12 PNK/GRN Serial data line for SUZUKI scan tool About 12.0 V Ignition switch at ON position and SUZUKI scan tool connected to data link connector
0.0 V Ignition switch at OFF position
13 PNK/GRN Serial data line for SUZUKI scan tool About 12.0 V Ignition switch at ON position and SUZUKI scan tool connected to data link connector
0.0 V Ignition switch at OFF position
15 PPL/WHT Communication line between ECM and Immobilizer Control Module Refer to Reference Waveform . Ignition switch at ON position
0.0 V Ignition switch at OFF position
16 BLK/WHT Ignition switch signal About 12.0 V Ignition switch at ON position
0 – 1 V Ignition switch at OFF position
17 BLK Ground 0.0 V Always
18 WHT Power supply 12.0 V Always
Reference Waveform
Measurement terminal CH 1: G46-15 to G46-17
Oscilloscope settings CH 1: 5 V/DIV
TIME: 100 ms/DIV
Measurement condition Ignition switch at ON position