DTC Detecting Condition and Trouble Area

WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC INFORMATION AND PROCEDURES REFERENCE CHART

DTC detecting condition	Trouble area
DTC P0620: Generator Control Circuit This DTC is detected if any one of the following conditions is met. Duty control signal of generator control is maximum (100%) for 10 sec. even if battery voltage is higher than 13.8 V. Duty control signal of generator control is minimum (0%) for 10 sec. even if battery voltage is lower than 12.6 V and electric load is less than 16 A. (2 D/C detection logic but MIL does not light up)	Generator and/or its circuit ECM

DTC detecting condition

Trouble area

DTC P0620: Generator Control Circuit
This DTC is detected if any one of the following conditions is met.

Duty control signal of generator control is maximum (100%) for 10 sec. even if battery voltage is higher than 13.8 V.
Duty control signal of generator control is minimum (0%) for 10 sec. even if battery voltage is lower than 12.6 V and electric load is less than 16 A.

(2 D/C detection logic but MIL does not light up)

Generator and/or its circuit
ECM