driver01
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driver01 [2009/08/17 16:48] dmertz |
driver01 [2024/03/15 11:16] (current) |
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| Sometimes a bad ISC (idle stepper control) motor can damage the driver chip inside the ECU. Here's what to look for to identify this situation. | Sometimes a bad ISC (idle stepper control) motor can damage the driver chip inside the ECU. Here's what to look for to identify this situation. | ||
| - | {{http://www.ecmtuning.com/images/forums/ecurepair/baddriver-01.jpg}} | + | {{https://www.ecmtuning.com/images/forums/ecurepair/baddriver-01.jpg}} |
| There are two things I'd like to note here. First, when these blow, they often take out tracks underneath the driver. In these cases, simply replacing the driver is ineffective. So if you remove this yourself, look **carefully** around the board to make sure no tracks were damaged when the driver blew. | There are two things I'd like to note here. First, when these blow, they often take out tracks underneath the driver. In these cases, simply replacing the driver is ineffective. So if you remove this yourself, look **carefully** around the board to make sure no tracks were damaged when the driver blew. | ||
| Second, these blow for a reason. If you simply replace one with another one without being certain you have addressed the underlying cause (typically a bad ISC motor), the new one will simply blow again when the ECU is powered up. | Second, these blow for a reason. If you simply replace one with another one without being certain you have addressed the underlying cause (typically a bad ISC motor), the new one will simply blow again when the ECU is powered up. | ||
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| ====== NOTES ====== | ====== NOTES ====== | ||
| - | These drivers are Mitsubishi M5269Ls and can not be easily sourced. They can, however, be shared across various Mitsubishi ECUs. | + | These drivers are Mitsubishi M5269Ls and can not be easily sourced. They can, however, be shared (swapped, donated, pulled, etc.) across various Mitsubishi ECUs. |
| ====== 2G PARTS ('95 ECU) ====== | ====== 2G PARTS ('95 ECU) ====== | ||
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| * IC107 controls ECU pins 4 and 17, ISC Servo (coil pair B). | * IC107 controls ECU pins 4 and 17, ISC Servo (coil pair B). | ||
| - | ====== 1G PARTS ('91+ ECU unless otherwise indicated) ====== | + | ====== 1G PARTS ('90-'94 ECUs) ====== |
| - | * IC104 controls ECU pin 6 (or pin 14 for a '90 ECU), MAF Reset signal. The other half of the chip is unused on US DSMs. | + | * IC104 controls ECU pin 14 ('90) or 6 ('91+), MAF Reset signal. The other half of the chip is unused on US DSMs. |
| * IC105 controls ECU pins 67 and 68, Idle Speed Control (ISC) Servo (coil pair B). | * IC105 controls ECU pins 67 and 68, Idle Speed Control (ISC) Servo (coil pair B). | ||
| * IC106 controls ECU pin 57, Fuel Pressure Solenoid (FPS), and ECU pin 105, Boost Control Solenoid (BCS). | * IC106 controls ECU pin 57, Fuel Pressure Solenoid (FPS), and ECU pin 105, Boost Control Solenoid (BCS). | ||
driver01.1250542121.txt.gz ยท Last modified: 2009/08/17 16:48 by dmertz
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