Suzuki XL7 2007 Service Manual page 757

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: "
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"
Circuit/System Verification
1. Verify that DTCs P0480, P0481, P0691, P0692,
P0693 and P0694 are not set.
➢ If any cooling system DTCs are set, repair the DTC
first. Refer to "Diagnostic Trouble Code (DTC) List -
Vehicle Diagnostic Information: ".
2. Ignition ON, command the appropriate fan relay ON
and OFF with a scan tool. Verify that the fans turn
ON and OFF when changing between the
commanded states.
3. If the vehicle passes the Circuit/System Verification
test, then operate the vehicle within the conditions
that the concern was detected.
Circuit/System Testing
1. Ignition OFF, disconnect the cooling fan relays.
2. Ignition ON, one at a time, verify that a test lamp
illuminates between the relay switch B+ circuit
terminal 30 and ground.
➢ If the test lamp does not illuminate, test the relay
switch B+ circuit for a short to ground or an open/
high resistance. If the circuit tests normal and the
relay switch B+ circuit fuse is open, test all
components connected to the relay switch B+
circuit and replace as necessary.
3. Connect a 30A fused jumper between the relay
switch B+ circuit terminal 30 and the relay supply
circuit terminal 87 at the FAN 2 relay connector. This
will in complete the left side or main fan ground
circuit. Leave this jumper in place for the remainder
of this procedure.
Engine Cooling System:
4. One at a time, connect a 30A fused jumper between
the relay switch B+ circuit terminal 30 and the relay
switch supply circuit terminal 87 of the applicable fan
relay. Verify the appropriate fan turns ON.
➢ If the appropriate fan does not turn ON, test the
relay switch supply circuit for a short to ground or
open/high resistance. If the circuit tests normal, test
the fan ground circuit for open/high resistance. If
the circuit tests normal, replace the fan.
5. If all circuits test normal, test or replace the
appropriate cooling fan relays.
Component Testing
1. Ignition OFF, disconnect the cooling fan relay.
2. Test for 70-110 ohms of resistance between
terminals 85 and 86.
➢ If the resistance is not within the specified range,
replace the relay.
3. Test for infinite resistance between the following
terminals:
– 30 and 86
– 30 and 87
– 30 and 85
– 85 and 87
➢ If not the specified value, replace the relay.
4. Test for less than 2 ohms of resistance between
terminals 30 and 87A.
➢ If greater than the specified value, replace the
relay.
5. Install a 20A fused jumper wire between relay
terminal 85 and 12 volts. Install a jumper wire
between relay terminal 86 and ground. Test for less
than 2 ohms of resistance between terminals 30 and
87.
➢ If greater than the specified value, replace the
relay.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
• "Relay Replacement (Within an Electrical Center): "
"Relay Replacement (Attached to Wire Harness): "
• "Engine Coolant Fan Motor Replacement"
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