R32 4Motion V6-3.2L (CBRA) (2008)
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and if the voltage supply was OK:
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Erase the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04 - Erase DTC Memory
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Perform a road test to verify repair.
If the DTC does not return:
Repair complete, Generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
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End diagnosis.
If the DTC returns and no malfunction is found in the wiring and the voltage supply was OK:
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Replace the Engine Control Module (ECM) J623.
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Assembly is performed in the reverse of the removal.
Final procedures
After repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 03 - Read DTC Memory
2. If necessary, erase the DTC memory. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 04 - Erase DTC Memory
3. If the DTC memory was erased, generate readiness code. See: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
End of diagnosis
Oxygen Sensor 2 Heater Z28, Checking
Oxygen Sensor 2 Heater Z28, Checking
NOTE:
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Oxygen Sensor (O2S) 2 Heater Z28 is part of Heated Oxygen Sensor (H02S) 2G108 and cannot be serviced separately.
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When servicing terminals in the electrical harness connector of Heated Oxygen Sensor (H02S) 2G108, use only gold-plated terminals.
Special tools, testers and auxiliary items required
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Multimeter.
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Wiring diagram.
Test requirements
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FuseSB11 OK.
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Battery voltage at least 12.5 volts.
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All electrical consumers such as, lights and rear window defroster, switched off.
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Vehicles with automatic transmission, shift selector lever into position "P" or "N".
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A/C switched off.
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Ground (GND) connections between engine/transmission/chassis OK.
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Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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Remove the air filter.