1202-BAS RELEASE SWITCH PLAUSIBILITY ERROR Chrysler Crossfire I final

1202-BAS RELEASE SWITCH PLAUSIBILITY ERROR

1. When Monitored: Ignition on.
2. Set Condition: The Controller Antilock Brake (CAB) detects a Brake Assist System (BAS) Release Switch malfunction.

For a complete Antilock Brake System (ABS) circuit diagram, see SCHEMATICS AND DIAGRAMS .

1. 1) MEASURE THE VOLTAGE OF THE BAS RELEASE SWITCH SENSOR (APPLIED) CIRCUIT Turn the ignition off. Disconnect the BAS Brake Booster C2 harness connector. NOTE: Check connectors - Clean/repair as necessary. Turn the ignition on. Measure the voltage of the BAS Release Switch Sensor (Applied) circuit at the BAS Brake Booster C2 harness connector. Is the voltage below 1.0 volt? Yes Go to 4) . No Go to 2) .
2. 2) MEASURE THE VOLTAGE OF THE SENSOR (APPLIED) CIRCUIT Turn the ignition off. Disconnect the CAB harness connector. NOTE: Check connectors - Clean/repair as necessary. Turn the ignition on. Measure the voltage of the BAS Release Switch Sensor (Applied) circuit at the BAS Brake Booster C2 harness connector. Is the voltage below 1.0 volt? Yes Go to 3) . No Repair the BAS Release Switch Sensor (Applied) circuit for a short to voltage. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
3. 3) MEASURE THE RESISTANCE BETWEEN THE BAS RELEASE SWITCH SENSOR (APPLIED) CIRCUIT AND ALL OTHER CAB VOLTAGE CIRCUITS Turn the ignition off. Measure the resistance between the BAS Release Switch Sensor (Applied) circuit and the Sensor (Released) circuit in the BAS Brake Booster C2 harness connector. Measure the resistance between the BAS Release Switch Sensor (Applied) circuit and all 5 and 12 volt circuits in the CAB harness connector. Is the resistance for all measurements above 100k ohms? Yes Replace the Controller Antilock Brake (CAB) Module. Refer to «REMOVAL»(/chrysler/crossfire/i-final-2008-2008/remont/communication-devices/#electronic-control-modules-service-information) . Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) . No Repair the BAS Release Switch Sensor (Applied) circuit for a short to the circuit(s) that measured less than 100k ohms. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
4. 4) MEASURE THE VOLTAGE OF THE BAS RELEASE SWITCH 12 VOLT SUPPLY CIRCUIT With the ignition on. Measure the voltage of the BAS Release Switch 12 Volt Supply circuit at the BAS Brake Booster C2 harness connector. Is the voltage above 10 volts? Yes Go to 5) . No Go to 6) .
5. 5) MEASURE THE VOLTAGE OF THE BAS RELEASE SWITCH SENSOR (RELEASED) CIRCUIT With the ignition on. Measure the voltage of the BAS Release Switch Sensor (Released) circuit at the BAS Brake Booster C2 harness connector. Is the voltage above 10 volts? Yes Go to 10) . No Go to 8) .
6. 6) MEASURE THE RESISTANCE BETWEEN GROUND AND THE 12 VOLT SUPPLY CIRCUIT Turn the ignition off. Disconnect the CAB harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between ground and the BAS Release Switch 12 Volt Supply circuit at the BAS Brake Booster C2 harness connector. Is the resistance above 100k ohms? Yes Go to 7) . No Repair the BAS Release Switch 12 Volt Supply circuit for a short to ground. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
7. 7) MEASURE THE RESISTANCE OF THE 12 VOLT SUPPLY CIRCUIT With the ignition off. Measure the resistance of the BAS Release Switch 12 Volt Supply circuit from the BAS Brake Booster C2 harness connector to the CAB harness connector. Is the resistance below 5.0 ohms? Yes Replace the Controller Antilock Brake (CAB) Module. Refer to «REMOVAL»(/chrysler/crossfire/i-final-2008-2008/remont/communication-devices/#electronic-control-modules-service-information) . Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) . No Repair the BAS Release Switch 12 Volt Supply circuit for an open. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
8. 8) MEASURE THE RESISTANCE BETWEEN GROUND AND THE BAS RELEASE SWITCH SENSOR (RELEASED) CIRCUIT Turn the ignition off. Disconnect the CAB harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between ground and the BAS Release Switch Sensor (Released) circuit at the BAS Brake Booster C2 harness connector. Is the resistance above 100k ohms? Yes Go to 9) . No Repair the BAS Release Switch Sensor (Released) circuit for a short to ground. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
9. 9) MEASURE THE RESISTANCE OF THE BAS RELEASE SWITCH SENSOR (RELEASED) CIRCUIT With the ignition off. Measure the resistance of the BAS Release Switch Sensor (Released) circuit from the BAS Brake Booster C2 harness connector to the CAB harness connector. Is the resistance below 5.0 ohms? Yes Replace the Controller Antilock Brake (CAB) Module. Refer to «REMOVAL»(/chrysler/crossfire/i-final-2008-2008/remont/communication-devices/#electronic-control-modules-service-information) . Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) . No Repair the BAS Release Switch Sensor (Released) circuit for an open. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
10. 10) MEASURE THE RESISTANCE BETWEEN GROUND AND THE BAS RELEASE SWITCH SENSOR (APPLIED) CIRCUIT Turn the ignition off. Disconnect the CAB harness connector. NOTE: Check connectors - Clean/repair as necessary. Measure the resistance between ground and the BAS Release Switch Sensor (Applied) circuit at the BAS Brake Booster C2 harness connector. Is the resistance above 100k ohms? Yes Go to 11) . No Repair the BAS Release Switch Sensor (Applied) circuit for a short to ground. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
11. 11) MEASURE THE RESISTANCE OF THE BAS RELEASE SWITCH SENSOR (APPLIED) CIRCUIT With the ignition off. Measure the resistance of the BAS Release Switch Sensor (Applied) circuit from the BAS Brake Booster C2 harness connector to the CAB harness connector. Is the resistance below 5.0 ohms? Yes Go to 12) . No Repair the BAS Release Switch Sensor (Applied) circuit for an open. Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .
12. 12) MEASURE THE RESISTANCE BETWEEN GROUND AND THE BAS RELEASE SWITCH SENSOR (APPLIED) CIRCUIT WITH CAB CONNECTED With the ignition off. Reconnect the CAB harness connector. Measure the resistance between ground and the BAS Release Switch Sensor (Applied) circuit at the BAS Brake Booster C2 harness connector. Is the resistance 6.5-7.0k ohms? Yes Replace the BAS Release Switch (Brake Booster). Refer to «REMOVAL»(/chrysler/crossfire/i-final-2008-2008/remont/mechanical-hydraulic/#mechanical-brake-system-base-service-information) . Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) . No Replace the Controller Antilock Brake (CAB) Module. Refer to «REMOVAL»(/chrysler/crossfire/i-final-2008-2008/remont/communication-devices/#electronic-control-modules-service-information) . Perform «ABS VERIFICATION TEST»(/chrysler/crossfire/i-final-2008-2008/remont/anti-locktraction-control/#anti-lock-brake-system-electrical-diagnostics) .