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Is the voltage greater than 3 volts? -> Yes REPAIR the short to B+. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
-> No INSTALL a new forward alert switch. Speed Control Deactivator Switch (19.75.20) CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ACC module. Speed Control Module (19.75.26) PINPOINT TEST G532451p2 : G532451t3 : CHECK THE FORWARD ALERT SWITCH CIRCUIT FOR SHORT 1. Turn the ignition switch to the OFF position. 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 20 (U) and GROUND. Is the resistance less than 10,000 ohms? -> Yes REPAIR the short to ground. For additional information, refer to the wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
-> No INSTALL a new forward alert switch. Speed Control Deactivator Switch (19.75.20) CLEAR the DTC. TEST the system for normal operation. If the DTC is repeated, INSTALL a new ACC module. Speed Control Module (19.75.26) PINPOINT TEST G532451p3 : |