Suzuki XL7 2007 Service Manual page 236

1A-131 Engine General Information and Diagnosis:
Reference Information
Schematic Reference
"Starting and Charging Schematics: "
Connector End View Reference
"Engine Electrical Connector End Views: "
Description and Operation
"Charging System Description and Operation: "
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
• "Scan Tool Data List - Engine Controls - 3.6L (LY7)"
• "Scan Tool Data Definitions - Engine Controls - 3.6L
(LY7)"
Circuit/System Verification
1. If the DTC is history, refer to "Charging System Test:
"
2. Engine running, record the voltage at the battery
terminals. Observe the scan tool ECM Ignition 1
signal parameter. Voltages should not differ by more
than 1 volt.
➢ If greater than the specified value replace the ECM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
"Control Module References: " for ECM replacement,
setup, and programming
DTC P0601, P0602, P0603, P0604, P0605,
P0606, P0607, P1600, P1621, P1627, P1680,
P1681, P1683, or P2610
Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle
Diagnostic Information: " prior to using this diagnostic
procedure.
• Review "Strategy Based Diagnosis: " for an overview
of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle
Diagnostic Information: " provides an overview of
each diagnostic category.
DTC Descriptors
DTC P0601: Control Module Read Only Memory (ROM)
DTC P0602: Control Module Not Programmed
DTC P0603: Control Module Long Term Memory Reset
DTC P0604: Control Module Random Access Memory
(RAM)
DTC P0606: Control Module Internal Performance
DTC P2610: Control Module Ignition Off Timer
Performance
Circuit/System Description
This diagnostic applies to internal microprocessor
integrity conditions within the engine control module
(ECM). This diagnostic also addresses if the ECM is not
programmed.
Conditions for Running the DTC
P0601
The checksum calculation at power down in the last
drive cycle was completely finished. DTC P0601 runs
once an ignition cycle.
P0602
The ignition is ON, with the engine OFF. DTC P0602
runs continuously when the ignition is ON for more than
1 second.
P0603
• The ignition is ON.
• The power down calculation in the last drive cycle was
completely finished.
P0604
The read/write test at power down in the last drive cycle
completely finished. DTC P0604 runs once an ignition
cycle.
P0606
DTC P0606 runs continuously with ignition ON or engine
operating.
P2610
DTC P2610 runs continuously once the engine is
operating and the real time clock is active.
Conditions for Setting the DTC
P0601
The ECM detects the incorrect read only memory (ROM)
checksum.
P0602
The ECM detects that programming is incomplete for
more than 4 seconds.
P0603
The ECM detects an error during the shut down path
test.
P0604
The ECM detects random access memory (RAM) errors.
P0606
The ECM detects an internal error.
P2610
The ECM detects the engine off timer is not valid for
more than 4 seconds or for a cumulative of 50 seconds.