本人最近自装电瓶后
对于行驶中发电机电压变化感到兴趣
抬头显示器最高可以14.8V
最低来到12.3V
在开红火后雾灯10下故障灯10下重置电瓶后
行驶中仍时不时跳到超低电压
开始怀疑是电池有毛病、我装的有毛病还是车子有毛病
于是不停收集资讯
发现福特的车(欧规)好像都可以自我检测基本数据?
好奇之下也来试试
先按住左仪表板小按扭
再开红火
还真的跳出TEST->GUAGE
然后每再按一次小按扭
就会出现各种不同数据
bt 代表 电压
此时红火不关, 直接发动车子
可以观察行驶中的各种数据
但太多看不懂
于是又收集了一下资料
发现某福特论坛提供下列数据
除了各种速度、温度及电压外，全都看不懂
不知道这样的隐藏功能，是只有在欧系车才有
还是日系车也有？
Self-Diagnostic Mode - Instrument Cluster
1. To enter the instrument cluster self-diagnostic mode simultaneously
depress and hold the tripmeter reset button then turn the ignition switch to
position II or III.
2. Release the tripmeter reset button when TEST is displayed on the LCD. This
will take between 5 and 8 seconds.
3. The instrument cluster will enter the gauge sweep test.
4. To navigate to the following tests while in self-diagnostic mode depress
the RESET button to move to the next test.
5. The self-test is deactivated when the ignition is turned to the OFF
position.
#.Test
#.Syntax Displayed
#.Gauge/Indicator/Display Tested
#.Description
#.1..Gauge sweep.
#.GAGE.
#.Tachometer, speedometer, temperature and fuel.
#.All gauges go through a full up and down pointer sweep smoothness check,
which takes approximately 5 seconds.
#.2..Fill in all LCD.
#.8888.
#.LCD display built into Speedometer.
#.Fills in LCD display therefore seeing if display functioning correctly.
#.3..Indicator bulbs.
#.BULB.
#.Instrument cluster illuminates indicator and warning indicators.
#.Illuminates all the warning indicators that are controlled by the
instrument cluster.
#.4..ROM level.
#.rXXX.
#.Instrument cluster read only memory (ROM).
#.Displays the instrument cluster ROM revision level.
#.5..NVM level.
#.EXXX.
#.Instrument cluster non volatile memory (NVM).
#.Displays the instrument cluster NVM revision.
#.6..DTC.
#.XXXX or NONE.
#.Diagnostic trouble codes (DTCs).
#.To list the DTCs stored, press the RESET button.
..REFER to the instrument cluster diagnostic trouble code (DTC) index below.
..The DTC codes will scroll through if there is more than one.
#.7..Road speed mph.
#.XXX.X.
#.Speedometer.
#.Displays the speed signal input in mph.
#.8..Road speed Km/h.
#.XXX.X.
#.Speedometer.
#Displays the speed signal input in Km/h.
#.9..Engine speed.
#.XXXX.
#.Tachometer.
#.Displays the tachometer input signal (RPM).
#.10..Fuel volume.
#.FXXX.
#.Fuel sender system.
#.Displays the fuel volume signal input.
#.11..Coolant Temp.
#.XXXC
#.Engine coolant temperature.
#.Displays the engine coolant temperature signal input.
#.12..Battery Voltage.
#.bXXX.
#.Battery Voltage (t).
#.Displays battery voltage input.
#.13..ABS fail.
#.Ab-[H/L].
#.ABS system.
#.Displays ABS raw cluster input. (H = open-circuit, L = ground).
#.14..Electronic Brake Distribution Failure (EBD).
#.Eb-[H/L].
#.EBD system.
#.Displays EBD raw cluster input. (H = open-circuit, L = ground).
#.15..Illumination.
#.IL-[H/L].
#.Cluster and instrument panel illumination.
#.Displays instrument cluster and instrument panel illumination. (H = ON, L =
OFF).
#.16..Crank Sense.
#.Cr-[H/L].
#.Cluster and instrument panel crank sense.
#.Displays Cluster and instrument panel Crank sense. (H = Ignition, L =
Ground or over-charging).
#.(Crank sense it the Pos I (Accessory) supply to the cluster. If this is
missing then the cluster will remain dead for about 20 seconds after key on.
Then it will function normally. This can happen when someone fits a radio and
blows the accessory fuse).
Note:
Additional tests are available after number #.16 but are not useful for
diagnostics.
Note:
Later vehicles had a "cost reduced" cluster that had a different Engineering
Test Mode layout. These came in about 03-53 reg, and can be distinguished by
only the symbol lighting up in the tell tale rather than the whole lot. (LEDs
rather than bulbs).
These clusters used stepper motors for the gauges rather than the air cored
ones and did not have a Gauge Sweep test?
Self ..........DTC.......... Description
Diagnostic
Mode
Displayed
DTC
9202 ..........B1202.......... Fuel pump module circuit open
9204 ..........B1204.......... Fuel pump module short to ground
9342 ..........B1342.......... Instrument Cluster ECU is defective
9317 ..........B1317.......... battery voltage high (greater than 16V)
9318 ..........B1318.......... battery voltage low (less than 10V)
9359 ..........B1359.......... Ignition Run/ACC circuit failure
A143 ..........B2143.......... NVM memory failure
A477 ..........B2477.......... Module configuration failure
D041 ..........U1041.......... Invalid data for vehicle speed
D027 ..........U1027.......... Invalid data for engine RPM
D073 ..........U1073.......... Invalid data for engine coolant
D262 ..........U1262.......... Missing speed, tacho, engine temp, or dometer
count
D123 ..........U1123.......... Invalid data for odomete