Jaguar XJ (X350). Manual — part 998
-> No
GO to Pinpoint Test G549822t120.
G549822t108 : CHECK THE SUPPLY TO THE APP2 SENSOR
1. Measure the voltage between:
CR14, harness side
Battery
Pin 02
Negative terminal
Is the voltage between 4.8 - 5.2 volts?
-> Yes
GO to Pinpoint Test G549822t109.
-> No
GO to Pinpoint Test G549822t117.
G549822t109 : CHECK THE APP2 SIGNAL CIRCUIT FOR SHORT CIRCUIT TO
GROUND
1. Measure the resistance between:
CR14, harness side
Battery
Pin 01
Negative terminal
Is the resistance greater than 100 Kohms?
-> Yes
GO to Pinpoint Test G549822t110.
-> No
GO to Pinpoint Test G549822t113.
G549822t110 : CHECK THE APP2 SIGNAL CIRCUIT FOR SHORT CIRCUIT TO
POWER
1. Measure the resistance between:
CR14, harness side
Battery
Pin 01
Positive terminal
Is the resistance greater than 100 Kohms?
-> Yes
GO to Pinpoint Test G549822t111.
-> No
GO to Pinpoint Test G549822t115.
G549822t111 : CHECK THE APP2 SIGNAL AND POWER CIRCUITS FOR SHORT
CIRCUIT TO EACH OTHER
1. Measure the resistance between:
CR14, harness side CR14, harness side
Pin 01
Pin 02
Is the resistance greater than 100 Kohms?
-> Yes
GO to Pinpoint Test G549822t112.
-> No
GO to Pinpoint Test G549822t116.
G549822t112 : CHECK THE APP2 SIGNAL CIRCUIT FOR HIGH RESISTANCE
1. Key off. 2. Disconnect the ECM connector, EC66. 3. Measure the resistance between:
CR14, harness side EC66, harness side
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Pin 01
Pin C2
Is the resistance less than 10 ohms?
-> Yes
An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other
physical damage to the harness. If no fault is found in the circuit, suspect the following
component(s): - APP connector - APP sensor - ECM connector - ECM
-> No
REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams. Clear any
DTCs, test the system for normal operation.
G549822t113 : CHECK THE APP2 SIGNAL AND RETURN CIRCUITS FOR
SHORT CIRCUIT TO EACH OTHER
1. Key off. 2. Disconnect the ECM connector, EC66. 3. Key on, engine off. 4. Measure the resistance
between:
CR14, harness side CR14, harness side
Pin 01
Pin 06
Is the resistance greater than 100 Kohms?
-> Yes
GO to Pinpoint Test G549822t114.
-> No
REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test
the system for normal operation.
G549822t114 : CHECK WHETHER THE SHORT CIRCUIT TO GROUND IS IN
THE HARNESS OR THE MODULE
1. Measure the resistance between:
CR14, harness side
Battery
Pin 01
Negative terminal
Is the resistance greater than 100 Kohms?
-> Yes
Suspect: - ECM
-> No
REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test
the system for normal operation.
G549822t115 : CHECK WHETHER THE SHORT CIRCUIT TO POWER IS IN THE
HARNESS OR THE MODULE
1. Key off. 2. Disconnect the ECM connector, EC66. 3. Key on, engine off. 4. Measure the resistance
between:
CR14, harness side
Battery
Pin 01
Positive terminal
Is the resistance greater than 100 Kohms?
-> Yes
Suspect: - ECM
-> No
REPAIR the short circuit. For additional information, refer to the wiring diagrams. Clear any DTCs, test
the system for normal operation.
G549822t116 : CHECK WHETHER SHORT CIRCUIT IS IN THE HARNESS OR
THE MODULE
1. Key off. 2. Disconnect the ECM connector, EC66. 3. Measure the resistance between:
CR14, harness side CR14, harness side
Pin 01
Pin 02
Is the resistance greater than 100 Kohms?
-> Yes
Suspect: -ECM
-> No
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