Pinpoint Tests

Pinpoint Tests

PINPOINT TEST G834532p4 : P163200 CHARGING SYSTEM FAULT

G834532t9 : CHECK THE BATTERY VOLTAGE WITH THE ENGINE RUNNING
1 Connect a suitable voltmeter across the battery terminals.
2 Start the engine and allow to idle with no electrical loads applied.
3 Measure the maximum voltage achieved at the battery after start.
- Is the voltage greater than 13 volts?

->Yes
GO to Pinpoint Test G834532t10.

->No
INSTALL a fully charged battery.
GO to Pinpoint Test G834532t13.

G834532t10 : CHECK THE GENERATOR 'S' TERMINAL FOR BATTERY VOLTAGE
1 Set ignition status to OFF.
2 DISCONNECT generator electrical connector PI048.
3 MEASURE the voltage at generator electrical connector PI048 pin 3.
- Is the voltage greater than 10 volts?

->Yes
GO to Pinpoint Test G834532t13.

->No
GO to Pinpoint Test G834532t11.

G834532t11 : CHECK FUSE 5 IN REAR JUNCTION BOX (RJB)
1 Check fuse 5 in the RJB.
- Is the fuse OK?

->Yes
REPAIR the circuit between the generator electrical connector PI048 pin 3 and fuse 5 in the RJB. CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t12.

G834532t12 : CHECK THE GENERATOR 'S' TERMINAL FOR SHORT TO GROUND
1 MEASURE the resistance between generator electrical connector PI048 pin 3 and ground.
- Is the resistance less than 10,000 ohms?

->Yes
REPAIR the circuit between the generator electrical connector PI048 pin 3 and fuse 5 of the RJB. INSTALL a new fuse, CLEAR the DTC, test the system for normal operation.

->No
INSTALL a new fuse, CLEAR the DTC, test the system for normal operation.

G834532t13 : CHECK FOR BATTERY VOLTAGE AT THE GENERATOR 'L' TERMINAL
1 Set ignition status to OFF.
2 Disconnect generator electrical connector PI048.
3 Set ignition status to ON.
4 Measure the voltage at generator electrical connector PI048 pin 1.
- Is the voltage greater than 10 volts?

->Yes
INSTALL a new generator. For additional information, refer to Generator - Vehicles Without: Supercharger Service and Repair CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t14.

G834532t14 : CHECK THE GENERATOR 'L' LINE FOR SHORT TO GROUND
1 Set ignition status to OFF.
2 Disconnect battery.
3 MEASURE the resistance between the generator electrical connector PI048 pin 1 and ground.
- Is the resistance less than 1,000 ohms?

->Yes
REPAIR the circuit between the generator electrical connector PI048 pin 1 and the Engine Control Module (ECM). CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t15.

G834532t15 : CHECK THE GENERATOR 'L' LINE FOR SHORT TO POWER
1 MEASURE the resistance between the generator electrical connector PI048 pin 1 and battery positive.
- Is the resistance less than 10,000 ohms?

->Yes
REPAIR the circuit between the generator electrical connector PI048 pin 1 and the Engine Control Module (ECM). CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t16.

G834532t16 : CHECK THE GENERATOR 'L' LINE FOR OPEN CIRCUIT
1 Disconnect the ECM electrical connector PI300.
2 MEASURE the resistance between the generator electrical connector PI048 pin 1and ECM electrical connector PI300 pin 16.
- Is the resistance less than 5 ohms?

->Yes
Install a new generator. For additional information, refer to Generator - Vehicles Without: Supercharger Service and Repair CLEAR the DTC, test the system for normal operation.

->No
REPAIR the circuit between the generator electrical connector PI048 pin 1 and the ECM electrical connector PI300 pin 16. CLEAR the DTC, test the system for normal operation.

PINPOINT TEST G834532p1 : IGNITION POWER CIRCUIT TESTS

G834532t1 : CHECK FOR IGNITION POWER AT GENERATOR
1 Set ignition status to OFF.
2 Disconnect generator electrical connector PI048.
3 Set ignition status to ON.
4 Measure the voltage at generator electrical connector PI048 pin 2.
- Is the voltage greater than 10 volts?

->Yes
Check for quiescent current fault, check battery condition. Refer to the Battery Care Manual.

->No
GO to Pinpoint Test G834532t2.

G834532t2 : CHECK THE IGNITION POWER CIRCUIT FOR SHORT TO GROUND
1 Set the ignition status to OFF.
2 Disconnect the battery.
3 Check the resistance between generator electrical connector PI048 pin 2 and GROUND.
- Is the resistance less than 400 ohms?

->Yes
REPAIR the circuit between the generator electrical connector PI048 pin 2 and the CJB. CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t3.

G834532t3 : CHECK THE IGNITION POWER CIRCUIT FOR SHORT TO POWER
1 Check the resistance between generator electrical connector PI048 pin 2 and battery positive.
- Is the resistance less than 10,000 ohms?

->Yes
REPAIR the circuit between the generator electrical connector PI048 pin 2 and the CJB. CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t4.

G834532t4 : CHECK THE IGNITION POWER CIRCUIT FOR OPEN CIRCUIT
1 Disconnect CJB electrical connector FL048.
2 Check the resistance between CJB electrical connector FL048 pin 12 and generator electrical connector PI048 pin 2.
- Is the resistance greater than 5 ohms?

->Yes
REPAIR the circuit between CJB electrical connector FL048 pin 12 and generator electrical connector PI048 pin 2. CLEAR the DTC, test the system for normal operation.

->No
GO to Pinpoint Test G834532t5.

G834532t5 : CHECK CJB IGNITION POWER OUTPUT DRIVE
1 Connect the battery.
2 Set ignition status to ON.
3 Check the voltage at CJB electrical connector FL048, component side, pin 12.
- Is the voltage greater than 10 volts?

->Yes
Check no other modules connected to this circuit are pulling to GROUND. Clear the DTC, test the system for normal operation.

->No
Install a new generator. For additional information, refer to Generator - Vehicles Without: Supercharger Service and Repair

PINPOINT TEST G834532p7 : GENERATOR NOISY

G834532t23 : CHECK THE GENERATOR FOR SECURITY
1 Inspect the generator fixings.
- Is the generator secure?

->Yes
GO to Pinpoint Test G834532t24.

->No
SECURE the generator. TEST the system for normal operation.

G834532t24 : CHECK THE FEAD BELT
1 Remove and inspect the FEAD belt. For additional information, refer to Accessory Drive Belt - Vehicles Without: Supercharger Accessory Drive Belt
- Is the FEAD belt in good condition?

->Yes
GO to Pinpoint Test G834532t25.

->No
INSTALL a new FEAD belt. TEST the system for normal operation.

G834532t25 : CHECK THE FEAD BELT TENSIONER
1 Remove and inspect the FEAD belt tensioner. For additional information, refer to Accessory Drive Belt Tensioner - Vehicles Without: Supercharger Accessory Drive Belt Tensioner
- Is the FEAD belt tensioner in good condition?

->Yes
GO to Pinpoint Test G834532t26.

->No
INSTALL a new FEAD belt tensioner. TEST the system for normal operation.

G834532t26 : CHECK THE GENERATOR FOR MECHANICAL NOISE
1 Rotate the generator pulley by hand.
- Does the generator rotor shaft rotate smoothly and quietly?

->Yes
GO to Pinpoint Test G834532t27.

->No
INSTALL a new generator. For additional information, refer to Generator - Vehicles Without: Supercharger Service and Repair TEST the system for normal operation.

G834532t27 : CHECK THE FEAD BELT IDLER PULLEYS
1 Rotate the FEAD belt idler pulleys by hand.
- Do the FEAD belt idler pulleys rotate smoothly and quietly?

->Yes
GO to Pinpoint Test G834532t28.

->No
INSTALL new FEAD belt idler pulleys as necessary. For additional information, refer to Accessory Drive Belt Idler Pulley - Vehicles Without: Supercharger Accessory Drive Belt Idler Pulley TEST the system for normal operation.

G834532t28 : CHECK THE GENERATOR FOR ELECTRICAL NOISE
1 Install the FEAD belt pulleys and belt.
2 Start and run the engine at 1500 rpm. Apply a high electrical load to the battery.
- Is the noise only heard with the high electrical load applied?

->Yes
GO to Pinpoint Test G834532t29.

->No
CHECK the air conditioning compressor. For additional information, refer to Air Conditioning (A/C) Compressor - Vehicles Without: Supercharger Service and Repair CHECK the power steering pump. For additional information, refer to Power Steering Pump - Vehicles Without: Supercharger Service and Repair TEST the system for normal operation.

G834532t29 : ELIMINATE THE GENERATOR AS THE CAUSE OF ELECTRICAL NOISE
1 Disconnect generator electrical connector PI048.
2 Start and run the engine at 1500 rpm.
- Is the noise still present?

->Yes
CHECK the air conditioning compressor. For additional information, refer to Air Conditioning (A/C) Compressor - Vehicles Without: Supercharger Service and Repair CHECK the power steering pump. For additional information, refer to Power Steering Pump - Vehicles Without: Supercharger Service and Repair TEST the system for normal operation.

->No
INSTALL a new generator. For additional information, refer to Generator - Vehicles Without: Supercharger Service and Repair TEST the system for normal operation.

PINPOINT TEST G834532p8 : RADIO INTERFERENCE

G834532t30 : CHECK IF THE GENERATOR IS THE CAUSE OF THE RADIO INTERFERENCE
1 Start and run the engine at 1500 rpm.
2 Turn the radio to the ON position, and select the affected station.
- Is the radio interference present?

->Yes
GO to Pinpoint Test G834532t32.

->No
GO to Pinpoint Test G834532t31.

G834532t31 : CHECK IF THE GENERATOR IS THE CAUSE OF THE RADIO INTERFERENCE WITH A HIGH ELECTRICAL LOAD APPLIED TO THE BATTERY
1 Start and run the engine at 1500 rpm.
2 Apply a high electrical load to the battery.
3 Turn the radio to the ON position, and select the affected station.
- Is the radio interference present?

->Yes
GO to Pinpoint Test G834532t32.
GO to Pinpoint Test G834532t32.

->No
DIAGNOSE the entertainment system. For additional information, refer to Audio System Testing and Inspection

G834532t32 : ELIMINATE THE GENERATOR AS THE CAUSE OF RADIO INTERFERENCE
1 Disconnect generator electrical connector PI048.
2 Start and run the engine at 1500 rpm.
3 Turn the radio to the ON position, and select the affected station.
- Is the radio interference present?

->Yes
DIAGNOSE the entertainment system. For additional information, refer to Audio System Testing and Inspection

->No
CLEAN and tighten all mounting points, positive and negative cable connections (including the hood, luggage compartment lid and engine GROUND straps). INSTALL fuse 5 to the RJB. TEST the system for normal operation. If interference is still present, INSTALL a new generator. For additional information, refer to Generator - Vehicles Without: Supercharger Service and Repair