ELECTRIC AT OIL PUMP DRIVER INSPECTION [MZR 2.0 DISI i-stop]

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Caution
•  If the wiring harnesses or waterproof connectors are damaged, water penetrating the connector will cause a sensor malfunction. To prevent this, be careful not to damage wiring harnesses or waterproof connectors.

1.  Measure the electric AT oil pump driver terminal voltage.

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Electric AT oil pump driver terminal table

Terminal

Signal

Test condition

Voltage (V)
1A
Battery voltage
Switch the ignition to ON
Below 1.0
Idle
Below 1.0
Engine currently stopped by i-stop control
B+
1B
PCM control signal
Switch the ignition to ON
Below 1.0
Idle
Below 1.0
Engine currently stopped by i-stop control
0—5
1C
GND
Switch the ignition to ON
Below 1.0
Idle
Below 1.0
Engine currently stopped by i-stop control
Below 1.0
2A
Electric AT oil pump driving (-)
Switch the ignition to ON
Below 1.0
Idle
Below 1.0
Engine currently stopped by i-stop control
3.4—6.5
Before engine restart by i-stop control
B+
2B
Electric AT oil pump driving (+)
Switch the ignition to ON
Below 1.0
Idle
Below 1.0
Engine currently stopped by i-stop control
3.4—6.5
Before engine restart by i-stop control
B+

•  If not within the specification, replace the electric AT oil pump driver. (See ELECTRIC AT OIL PUMP DRIVER REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)