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1999 Pontiac Grand Am SE RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED

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Download 1999 Pontiac Grand Am SE 1998-99 BRAKES Anti-Lock/TCS – ABS-VI – Cars. DTC C1233: RIGHT FRONT WHEEL SPEED SENSOR CIRCUIT OPEN OR SHORTED 1. Perform diagnostic system check. See DIAGNOSTIC SYSTEM CHECK. After performing diagnostic system check, go to next step. 2. Turn ignition off. Spray right front wheel speed sensor jumper harness thoroughly with a 5 percent saltwater solution (2 teaspoons of salt to 12 ounces of water). Disconnect EBCM/EBTCM connector C1 (“W” body), connector C2 (“J” body, Cutlass and Malibu) or 32-pin connector (Achieva, Alero, Grand Am and Skylark). See EBCM/EBTCM LOCATION under REMOVAL & INSTALLATION. Using DVOM, measure resistance between speed sensor signal high circuit and speed sensor signal low circuit of EBCM/EBTCM connector. On “W” body, resistance should be 1020-1137 ohms at 68°F (20°C). On “J” body, Achieva, 1998 Grand Am and Skylark, resistance should be 1530-1870 ohms at 68°F (20°C). On Alero, Cutlass, 1999 Grand Am and Malibu, resistance should be 950-1250 ohms at 68°F (20°C). If resistance falls within this specified range, go to next step. If resistance is not within this specified range, go to step 11) . 3. Using DVOM, measure resistance between speed sensor signal low circuit of EBCM/EBTCM connector (C1, C2 or 32-pin connector) and ground. If resistance is infinite, go to next step. If resistance is not infinite, go to step 14) . 4. Turn ignition on, with engine off. Using DVOM, measure voltage between speed sensor signal low circuit of EBCM/EBTCM connector (C1, C2 or 32-pin connector) and ground. If voltage is not 0-1 volt, go to next step. If voltage is 0-1 volt, go to step 7) . 5. Turn ignition off. Disconnect right front wheel speed sensor at sensor connector. Turn ignition on, with engine off. Using DVOM, measure voltage between speed sensor signal low circuit of EBCM/EBTCM connector (C1, C2 or 32-pin connector) and ground. If voltage is not 0-1 volt, go to step 19) . If voltage is 0-1 volt, go to next step. 6. Using DVOM, measure voltage between speed sensor signal high circuit of EBCM/EBTCM connector (C1, C2 or 32-pin connector) and ground. If voltage is 0-1 volt, go to step 31) . If voltage is not 0-1 volt, go to step 20) . 7. Turn ignition off. Check EBCM/EBTCM connector for poor terminal contact, corrosion or damage which could result in open, short to voltage, or short to ground. If connector is faulty, go to step 27) . If connector is okay, go to next step. 8. Check wiring circuits between wheel speed sensor and EBCM/EBTCM for damage which could result in open, short to voltage or, short to ground between circuits. If wiring is faulty, go to step 21) . If wiring is okay, go to next step.


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