 |
This is a bad waveform |
| Vehicle: |
Jeep Cherokee 4.0 |
 View larger image
Crankshaft Position Sensor – Jeep Cherokee Waveform Notes
These waveforms are from a 1991 Jeep Cherokee 4.0 with an intermittent stall, hesitation and no start. Naturally the Jeep would not act up in the bay once the scope was hooked up, however, a short road test flushed out a single bump symptom.
A PicoScope 3223 two channel automotive oscilloscope was used to capture the waveforms. The timebase was set to display 5 seconds on each screen. Each channel was set to take a sample every 5 microseconds – a total of 980,393 samples per screen. In total 18 screens were recorded. (The PicoScope Automotive software is capable of storing up to 32 screens so even after capturing 90 seconds of waveform there was still plenty of room in the waveform buffer.)
Several pre and post symptom CKP failures were captured during the short road test, including the actual failure that caused the symptom.
Watch the video and see how much information was actually captured in a very short time. No other automotive scope has these capabilities.
汽車診斷 | 汽車診斷儀 | 汽車故障診斷儀 | 汽車測試儀 | 汽車分析儀 | 汽車診斷示波器 | 汽車電路測試儀 | 汽車電路分析儀 | 發(fā)動(dòng)機(jī)分析儀 | 發(fā)動(dòng)機(jī)綜合分析儀 | 發(fā)動(dòng)機(jī)檢測中心 | 點(diǎn)火分析儀 | 點(diǎn)火測試儀 | 汽車傳感器測試儀 | CAN總線示波器 | LIN總線示波器 | 汽車故障記錄儀 | 汽車傳感器分析儀 | 汽車檢測儀 | 噴油嘴測試儀 | 點(diǎn)火線圈測試儀 | 蓄電池測試儀 | 發(fā)電機(jī)測試儀 | 起動(dòng)機(jī)測試儀 | ABS傳感器測試儀 | ECU測試儀 | ECM測試儀 | 進(jìn)氣真空/壓力測試儀 | 排氣壓力測試儀 | 汽車技術(shù)培訓(xùn) | 爆震傳感器測試儀 | 缺火測試儀 | 缺缸測試儀 | 線路測試儀 | 引出線 | 汽車數(shù)字示波器 | 真空傳感器 | 高壓感應(yīng)測試頭 | 無分電器點(diǎn)火測試頭 | 獨(dú)立點(diǎn)火（COP）感應(yīng)測試頭 | 漏電測試儀 | 氣缸相對壓縮測試 | 電腦測試儀 | 發(fā)動(dòng)機(jī)控制器測試儀 | 泄漏測試儀 | 熒光檢漏 | 超聲波檢漏 | 汽車數(shù)字萬用表 | 電流鉗表 | 電流勾表 | 點(diǎn)火正時(shí)燈 |
