PINPOINT TEST G240073P3

Pinpoint Tests

PINPOINT TEST G240073p3 : DTC B2373: FORWARD ALERT SWITCH LED CIRCUIT TESTS

G240073t3 : CHECK THE FORWARD ALERT SWITCH LED CIRCUIT FOR OPEN CIRCUIT
1. Disconnect the battery negative terminal. Battery Disconnect
2. Disconnect the ACC module connector IP78.
3. Disconnect the forward alert switch connector IP50.
4. Measure the resistance between the ACC module connector IP78, pin 05 (U) and forward alert switch connector IP50, pin 07 (U).

- 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 G240073t9.

G240073t9 : CHECK THE FORWARD ALERT SWITCH LED CIRCUIT FOR SHORT CIRCUIT TO B+
1. Reconnect the battery negative terminal.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between the ACC module connector IP78, pin 05 (U) and GROUND.

- Is the voltage greater than 3 volts?

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

-> No
INSTALL a new forward alert switch. CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ACC control module, not the forward looking sensor.