Suzuki XL7 2007 Service Manual page 753

Action Taken When the DTC Sets
DTCs P0480, P0481, P0691, P0692, P0693, and P0694
are Type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0480, P0481, P0691, P0692, P0693, and P0694
are Type B DTCs.
Diagnostic Aids
• The ECM has the capability of providing command to
the fan relays even when a scan tool output control is
being used. Always refer to the fan control command
parameters on the scan tool to know which fans are
being commanded ON by the ECM.
• The following tables illustrate the FAN 1 relay, FAN 2
relay and the FAN 3 relay terminal locations in the
underhood fuse block:
Cooling FAN 1 Relay Terminal Identification
B+ - Switch
B+ - Coil
Front of Vehicle
Cooling FAN 2 Relay Terminal Identification
Voltage from Left Cooling
Fan
—
B+ - Coil
Front of Vehicle
Cooling FAN 3 Relay Terminal Identification
Control
B+ - Switch
Front of Vehicle
Reference Information
Schematic Reference
"Engine Cooling Schematics"
Connector End View Reference
"Cooling System Connector End Views"
Description and Operation
"Cooling System Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
DTC Type Reference
"Powertrain Diagnostic Trouble Code (DTC) Type
Definitions: "
Scan Tool Reference
"Scan Tool Data List (3.6L) - Engine Cooling"
"Scan Tool Data Definitions (3.6L) - Engine Cooling"
"Scan Tool Output Controls (3.6L) - Engine Cooling"
Control
Cooling Fan Supply
Voltage
Control
Voltage to Right Cooling
Fan
Ground
Cooling Fan Supply
Voltage
B+ - Coil
Engine Cooling System:
Circuit/System Verification
1. Ignition ON, command the appropriate fan relay ON
and OFF with a scan tool. You should hear or feel
the relay click.
2. If the vehicle passes the Circuit/System Verification
test, then operate the vehicle within the conditions
for running the DTC. You may also operate the
vehicle within the conditions that are captured in the
Freeze Frame/Failure Records Data List.
Circuit/System Testing
P0480, P0691, or P0692
1. Ignition OFF, disconnect the fan relay 1.
2. Ignition ON, verify that a test lamp illuminates
between the ignition voltage circuit terminal and
ground.
➢ If the test lamp does not illuminate, test the ignition
voltage circuit for a short to ground or an open/high
resistance. If the circuit tests normal and the
ignition voltage circuit fuse is open, test all
components connected to the ignition voltage
circuit and replace as necessary.
3. Connect a test lamp between the control circuit
terminal and the ignition voltage circuit terminal.
4. Command the fan relay 1 ON and OFF with a scan
tool. The test lamp should turn ON and OFF when
changing between the commanded states.
➢ If the test lamp is always ON, test the control circuit
for a short to ground. If the circuit tests normal,
replace the ECM.
➢ If the test lamp is always OFF, test the control
circuit for a short to voltage or an open/high
resistance. If the circuit tests normal, replace the
ECM.
5. If all circuits test normal, test or replace the relay.
P0481, P0693, or P0694
1. Ignition OFF, disconnect both fan relay 2 and fan
relay 3.
2. Ignition ON, verify that a test lamp illuminates
between the relay coil ignition circuit of both relays
and ground.
➢ If the test lamp does not illuminate, test the
applicable ignition circuit for a short to ground or an
open/high resistance. If the circuit tests normal and
the ignition circuit fuse is open, test all components
connected to the ignition voltage circuit and replace
as necessary.
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