PINPOINT TEST G532449p3 : FUEL LEVEL SENSOR(S) CIRCUIT RANGE/PERFORMANCE

Pinpoint Tests

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.

NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

PINPOINT TEST G532449p3 : FUEL LEVEL SENSOR(S) CIRCUIT RANGE/PERFORMANCE

G532449t7 : CHECK THE SIGNAL CIRCUIT BETWEEN THE REM AND LEVEL SENSOR A FOR SHORT CIRCUIT TO GROUND
1. Disconnect the fuel pump module electrical connector, FP06.
2. Measure the resistance between:

Fuel module connector Battery
FP06, harness side
Pin 12 Negative terminal

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t8.

G532449t8 : CHECK THE SIGNAL CIRCUIT BETWEEN THE REM AND LEVEL SENSOR A FOR SHORT CIRCUIT TO POWER
1. Measure the resistance between:

Fuel module connector Battery
FP06, harness side
Pin 12 Positive terminal

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t10.

G532449t10 : CHECK THE SIGNAL CIRCUIT BETWEEN THE REM AND LEVEL SENSOR B FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between:

Fuel module connector Battery
FP06, harness side
Pin 14 Negative terminal

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t11.

G532449t11 : CHECK THE SIGNAL CIRCUIT BETWEEN THE REM AND LEVEL SENSOR B FOR SHORT CIRCUIT TO POWER
1. Measure the resistance between:

Fuel module connector Battery
FP06, harness side
Pin 14 Positive terminal

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t13.

G532449t13 : CHECK THE SIGNAL RETURN CIRCUIT BETWEEN THE REM AND LEVEL SENSORS FOR SHORT CIRCUIT TO GROUND
1. Measure the resistance between:

Fuel module connector Battery
FP06, harness side
Pin 13 Negative terminal

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t14.

G532449t14 : CHECK THE SIGNAL RETURN CIRCUIT BETWEEN THE REM AND LEVEL SENSORS FOR SHORT CIRCUIT TO POWER
1. Measure the resistance between:

Fuel module connector Battery
FP06, harness side
Pin 13 3Positive terminal

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t15.

G532449t15 : CHECK THE SENSOR A RESISTANCE EMPTY
1. Remove the right-hand fuel pump module.
2. Move the sensor float to it's lowest position.
3. Measure the resistance between:

Fuel module connector Fuel module connector
FP06, component side FP06, component side
Pin 12 Pin 13

- Is the resistance 15 ohms?

-> YES
GO to Pinpoint Test G532449t16.

-> NO
INSTALL a new level sensor. CLEAR the DTC, test the system for normal operation.

G532449t16 : CHECK THE SENSOR A RESISTANCE FULL
1. Move the sensor float to it's highest position.
2. Measure the resistance between:

Fuel module connector Fuel module connector
FP06, component side FP06, component side
Pin 12 Pin 13

- Is the resistance 160 ohms?

-> YES
GO to Pinpoint Test G532449t17.

-> NO
INSTALL a new level sensor. CLEAR the DTC, test the system for normal operation.

G532449t17 : CHECK THE SENSOR B RESISTANCE EMPTY
1. Remove the left-hand fuel pump module. Fuel Pump Module - 2.7L Diesel (19.45.08)
2. Move the sensor float to it's lowest position.
3. Measure the resistance between:

Fuel module connector Fuel module connector
FP06, component side FP06, component side
Pin 13 Pin 14

- Is the resistance 15 ohms?

-> YES
GO to Pinpoint Test G532449t18.

-> NO
INSTALL a new level sensor. CLEAR the DTC, test the system for normal operation.

G532449t18 : CHECK THE SENSOR B RESISTANCE FULL
1. Move the sensor float to it's highest position.
2. Measure the resistance between:

Fuel module connector Fuel module connector
FP06, component side FP06, component side
Pin 13 Pin 14

- Is the resistance 160 ohms?

-> YES
GO to Pinpoint Test G532449t6.

-> NO
INSTALL a new level sensor. CLEAR the DTC, test the system for normal operation.

G532449t6 : CHECK THE SIGNAL CIRCUIT BETWEEN THE REM AND LEVEL SENSOR A FOR HIGH RESISTANCE
1. Disconnect the REM electrical connector, CR04.
2. Measure the resistance between CR04, pin 15 (WR) and FP06, pin 12 (WR).

REM connector CR04, Fuel module connector FP06,
harness side harness side
Pin 15 Pin 12

- Is the resistance greater than 5 ohms?

-> YES
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t9.

G532449t9 : CHECK THE SIGNAL CIRCUIT BETWEEN THE REM AND LEVEL SENSOR B FOR HIGH RESISTANCE
1. Measure the resistance between:

REM connector CR04, Fuel module connector FP06,
harness side harness side
Pin 16 Pin 14

- Is the resistance greater than 5 ohms?

-> YES
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> NO
GO to Pinpoint Test G532449t12.

G532449t12 : CHECK THE SIGNAL RETURN CIRCUIT BETWEEN THE REM AND LEVEL SENSORS FOR HIGH RESISTANCE
1. Disconnect the REM electrical connector, CR11.
2. Measure the resistance between:

REM connector CR11, Fuel module connector
harness side FP06, harness side
Pin 23 Pin 13

- Is the resistance greater than 5 ohms?

-> YES
REPAIR the high resistance circuit. CLEAR the DTC, test the system for normal operation.

-> NO
CHECK for DTCs indicating another cause of the complaint.