(b) Remove the EFI No. 1 fuse from the engine room relay block.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (Check for Open):
Standard Resistance (Check for Short):
Text in Illustration
(d) Reconnect the ECM connector.
(e) Reinstall the EFI No. 1 fuse.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 1 FUSE - ECM)
OK -- Continue to next step.
2. INSPECT BATTERY
(a) Check the battery voltage.
Battery voltage:
11 to 14 V
NG -- REPLACE BATTERY
OK -- Continue to next step.
3. CHECK BATTERY TERMINAL
(a) Check that the battery terminals are not loose or corroded.
OK:
Battery terminals are not loose or corroded.
NG -- REPAIR OR REPLACE BATTERY TERMINAL
OK -- CHECK FOR INTERMITTENT PROBLEMS
From 08/2009
2GR-FE ENGINE CONTROL: SFI SYSTEM: P0560: System Voltage
P0560 - System Voltage
DESCRIPTION
The battery supplies electricity to the ECM even when the engine switch is off. This power allows the ECM to store data such as DTC history, freeze
frame data and fuel trim values. If the battery voltage falls below a minimum level, the stored ECM data is cleared and the ECM determines that
there is a malfunction in the power supply circuit. When the engine is next started, the ECM will illuminate the MIL and set the DTC.
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