DTC Troubleshooting: P1887 (53-1)
|DTC P1887:||Problem in VABS Circuit|
NOTE: Record all freeze data and review General Troubleshooting Information before you troubleshoot.
|1.||Check whether the ABS DTC is indicated.|
Is the ABS DTC indicated?
YES - Perform the ABS troubleshooting by the indicated DTC, and recheck for DTC P1887 after troubleshooting.
NO - Go to 2.
|2.||Turn the ignition switch OFF.|
|3.||Check for continuity between PCM connector terminal A23 and body ground, and between terminal A24 and body ground.|
Is there continuity?
YES - Go to 4.
NO - Repair open in the wire PCM connector terminals A23 and A24, and ground (G101), or repair poor ground ( G101).n
|4.||Lift up the vehicle, and allow the wheels to rotate freely.|
|5.||With driving the vehicle, measure the voltage between PCM connector terminals A18 and A23 or A24.|
Is there pulsing voltage between 0-5 V?
YES - Update the PCM if it does not have the latest software, or subsutitute a known-good PCM, then recheck. If the symptom/ indication goes away with a known-good PCM, replace the original PCM.n
NO - Go to 6.
|6.||Disconnect ABS control unit connector.|
|7.||With driving the vehicle and remaining lifted up, measure the voltage between ABS control unit connector terminal No. 15 and body ground.|
Is there voltage?
YES - Check for loose terminal fit in the ABS control unit connector.n
NO - Repair open or short in the VABS wire between PCM connector terminal A15 and ABS control unit.n