R32 4Motion V6-3.2L (CBRA) (2008)
Auxiliary Water Pump Relay: Testing and Inspection
Auxiliary Engine Coolant Pump Relay J496, Checking
Special tools, testers and auxiliary items required
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Multimeter.
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wiring diagrams.
Test requirements
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FuseSB15OK.
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Fuse SB29 OK.
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The Ground (GND) connections at the engine and transmission OK.
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The battery voltage at least 12.5 V.
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The generator OK.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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Switch the ignition on.
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Using a Multimeter, check the following wiring connection for voltage.
Auxiliary Engine Coolant
Measure to
(EC) Pump Relay J496 socket
1/30
Engine Ground (GND)
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Switch the ignition off.
Specified value: 12.5 V
If the specified value was not obtained:
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Check the Auxiliary Engine Coolant (EC) Pump Relay J496 socket 1/30 to the Power Supply Relay (terminal 30, B+) J317 socket 87 for an open
circuit or short to Ground (GND).
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Check the electrical harness connectors for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
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Switch the ignition on.
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Using a Multimeter, check the following wiring connection for voltage.
Auxiliary Engine Coolant
Measure to
(EC) Pump Relay J496 socket
4/86
Engine Ground (GND)
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Switch the ignition off.
Specified value: 12.5 V
If the specified value was not obtained:
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Check the Auxiliary Engine Coolant (EC) Pump Relay J496 socket 4/86 to the Power Supply Relay (terminal 30, B+) J317 socket 87 for an open
circuit or short to Ground (GND).
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Check the electrical harness connectors for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking Ground (GND)
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.