Test TC-40B - No Crank Reference Signal At Pcm
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION Directory. For wiring diagram, see WIRING DIAGRAMS
article.
- Turn ignition off. Disconnect Camshaft Position (CMP) sensor connector. See Fig 1 or Fig 2. Turn ignition on. Using scan tool in voltmeter mode, check voltage on Crankshaft Position (CKP) sensor connector 8-volt supply circuit. If voltage is 7 volts or less, go to next step. If voltage is more than 7 volts, replace CMP sensor. Perform TEST VER-2A.
- Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using scan tool in ohmmeter mode, check resistance on CKP sensor connector 8-volt supply circuit. If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground on CKP 8-volt supply circuit. See CKP SENSOR CONNECTOR WIRE IDENTIFICATION table. Perform TEST VER-2A.
- Using external ohmmeter, check resistance of CKP sensor 8-volt supply circuit between CKP sensor and PCM connector terminal 32. If resistance is less than 5 ohms, replace PCM. Perform TEST VER-2A. If resistance is 5 ohms or more, repair open in CKP sensor 8-volt supply circuit. See CKP SENSOR CONNECTOR WIRE IDENTIFICATION table. Perform TEST VER-2A.