PINPOINT TEST G532451p7 : FLR SENSOR CAN CIRCUIT TESTS

Pinpoint Tests

PINPOINT TEST G532451p7 : FLR SENSOR CAN CIRCUIT TESTS

G532451t10 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'L' CIRCUIT FOR OPEN CIRCUIT
1. Turn the ignition switch to the OFF position.
2. Disconnect the ACC module connector IP78.
3. Disconnect the FLR sensor connector EC23.
4. Measure the resistance between the ACC module connector IP78, pin 02 (U) and FLR sensor connector EC23, pin 03 (U).

- Is the resistance greater than 5 ohms?

-> YES

CHECK connector IP55 for security. REPAIR the open circuit. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G532451t11.

G532451t11 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'L' CIRCUIT FOR SHORT CIRCUIT TO B+
1. Turn the ignition switch to the ON position.
2. Measure the voltage between the ACC module connector IP78, pin 02 (U) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
REPAIR the short to B+. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G532451t12.

G532451t12 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'L' CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Turn the ignition switch to the OFF position.
2. Measure the resistance between the ACC module connector IP78, pin 02 (U) and GROUND.

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short to GROUND. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G532451t13.

G532451t13 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'H' CIRCUIT FOR OPEN CIRCUIT
1. Measure the resistance between the ACC module connector IP78, pin 03 (R) and FLR sensor connector EC23, pin 04 (R).

- Is the resistance greater than 5 ohms?

-> YES
CHECK connector IP55 for security. REPAIR the open circuit. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G532451t14.

G532451t14 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'H' CIRCUIT FOR SHORT CIRCUIT TO B+
1. Turn the ignition switch to the ON position.
2. Measure the voltage between the ACC module connector IP78, pin 03 (R) and GROUND.

- Is the voltage greater than 3 volts?

-> YES
REPAIR the short to B+. CLEAR the DTC. TEST the system for normal operation.

-> NO
GO to Pinpoint Test G532451t15.

G532451t15 : CHECK THE ACC MODULE TO FLR SENSOR CAN 'H' CIRCUIT FOR SHORT CIRCUIT TO GROUND
1. Turn the ignition switch to the OFF position.
2. Measure the resistance between the ACC module connector IP78, pin 03 (R) and GROUND.

- Is the resistance less than 10,000 ohms?

-> YES
REPAIR the short to GROUND. CLEAR the DTC. TEST the system for normal operation.

-> NO
INSTALL a new FLR sensor. CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ACC control module.