MBE 900/4000 SID 232 Troubleshooting

Troubleshooting SID 232

Perform the following steps to troubleshoot SID 232:‪

232 03 – Accelerator Pedal Supply Voltage Above Normal

Troubleshoot a AP supply voltage above normal fault as follows:‪

1. Check for battery voltage at position “C,” wire 440P+ on the AP sensor connector. See Figure “Accelerator Pedal Wiring Connections” .
   1. If voltage is present in wire 440P+, repair short to vehicle power in wire 440P+. Erase fault code memory.
   2. If voltage is not present in wire 440P+, go to step 2 .
2. Check for battery voltage at position “A,” wire 440T, on the AP sensor connector. See Figure “Accelerator Pedal Wiring Connections” .
   1. If voltage is present in wire 440T, repair short to vehicle power in wire 440T. Erase fault code memory.
   2. If voltage is not present in wire 440T, go to step 3 .
3. Check for continuity between wires 440P+ and 440T with the 21-pin connector disconnected. See Figure “Accelerator Pedal Wiring Connections” .
   1. If there is continuity between wires 440P+ and 440T, repair short circuit between wires 440P+ and 440T connecting the DDEC-VCU to the AP sensor. Erase fault code memory.
   2. If there is no continuity between wires 440P+ and 440T, erase fault code memory.

Figure 1. Accelerator Pedal Wiring Connections

Section 27.2.2
232 04 – Accelerator Pedal Supply Voltage Below Normal

Troubleshoot a AP supply voltage below normal fault as follows:‪

1. Disconnect the AP assembly.
   1. If fault 232 04 is not active after disconnecting the pedal, replace the AP assembly. Erase fault code memory.
   2. If fault 232 04 is active after disconnecting the AP assembly, go to step 2 .
2. Check for continuity between wires 440P+ and 440V2 connecting the DDEC-VCU to the AP sensor. See Figure “Accelerator Pedal Wiring Connections” .
   1. If there is continuity between wires 440P+ and 440V2, repair short circuit between wires 440P+ and 440V2 connecting the DDEC-VCU to the AP sensor. Erase fault code memory.
   2. If there is no continuity between wires 440P+ and 440V2, go to step 3 .
3. Check for a short to ground in throttle position sensor power wire 440P+. See Figure “Accelerator Pedal Wiring Connections” .
   1. If wire 440P+ is shorted to ground, repair short to ground in wire 440P+. Erase fault code memory.
   2. If wire 440P+ is not shorted to ground, erase fault code memory.