Injector Driver Module (Idm) Inspection - Mazda Mazda6 Workshop Manual Supplement

CIrcuit Open/Short Inspection
1. Inspect for open/short circuit in the following wiring harnesses.
• If there is open/short circuit, repair or replace wiring harnesses.
Open circuit
• Signal circuit
— Calibration resistor No.1 terminal A and PCM terminal 37
— Calibration resistor No.2 terminal A and PCM terminal 62
— Calibration resistor No.3 terminal A and PCM terminal 89
— Calibration resistor No.4 terminal A and PCM terminal 11
• GND circuit
— Each calibration resistor terminal C and PCM terminal 91
Short circuit
• Signal circuit
— Calibration resistor No.1 terminal A and PCM terminal 37 to power circuit
— Calibration resistor No.1 terminal A and PCM terminal 37 to GND
— Calibration resistor No.2 terminal A and PCM terminal 62 to power circuit
— Calibration resistor No.2 terminal A and PCM terminal 62 to GND
— Calibration resistor No.3 terminal A and PCM terminal 89 to power circuit
— Calibration resistor No.3 terminal A and PCM terminal 89 to GND
— Calibration resistor No.4 terminal A and PCM terminal 11 to power circuit
— Calibration resistor No.4 terminal A and PCM terminal 11 to GND
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INJECTOR DRIVER MODULE (IDM) INSPECTION

Warning
• The IDM outputs high voltage and current for fuel injector driving. Do not inspect the IDM terminal
voltage, as it may cause an electric shock.
Note
• Perform the following test only when directed.
1. If any IDM-related failures are suspected, inspect the following:
• DTCs
• IDM-related harnesses
• Fuel injectors
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F2–84
CONTROL SYSTEM
A6E404018701201