Overview
This OEM genuine ZF 6073.017.112 TCU ERGOPOWER M/L EC4A is the electronic control unit specifically designed for the WG 190 series transmission. It governs shift timing, clutch modulation, and diagnostic communication within the transmission assembly. Mounted directly to the TRANSMISSION HOUSING, this TCU interprets driver input and engine load to deliver precise gear engagement. The SKU 6073.017.112 replaces earlier EC4A variants and is critical for maintaining factory-specified performance in heavy-duty applications.
Symptoms of Failure
- Erratic shifting or gear hunting – The TCU fails to process speed sensor data, causing the transmission to randomly upshift or downshift under load.
- Delayed engagement from Neutral to Drive – A worn TCU can introduce a 3-5 second lag when selecting a gear, often accompanied by a harsh clunk.
- No communication with diagnostic tools – The control unit may lose CAN bus connectivity, preventing fault code retrieval and forcing a transmission limp-home mode.
- Intermittent loss of power to solenoids – Internal circuit degradation leads to momentary transmission disengagement at highway speeds.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6073.017.112 |
| Type | TCU ERGOPOWER M/L EC4A |
| Material | Die-cast aluminum housing with sealed PCB |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 45 mm |
| OEM Reference | ZF 6073.017.112 |
| Operating Voltage | 12V / 24V DC |
| Connector Type | 48-pin AMP |
Compatibility
This TCU is engineered for the ZF WG 190 series, but it also cross-fits the WG 180 and WG 200 transmissions when used with the correct HOUS.FRONT SECT and HOUSING REAR PART. For WG 190 applications, the TCU mounts directly to the HOUSING REAR SECTION. Always verify the EC4A software revision against your transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Main structural casing for gear sets and valve body |
| 4657201161 | HOUS.FRONT SECT | Front section housing the torque converter and pump |
| 4657201162 | HOUSING REAR PART | Rear housing supporting output shaft and PTO interface |
| 4657298107 | HOUSING REAR SECTION | Intermediate rear section for planetary carrier support |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing dowel positioning |
| 0636100801 | CAP SCREW | M10 x 30 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retaining plate for TCU mounting bracket |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil pump suction |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for valve body |
| 0636100803 | CAP SCREW | M8 x 25 bolt for screen sheet retention |
Frequently Asked Questions
Q: Can the 6073.017.112 TCU be reprogrammed for different shift patterns?
A: Yes, the EC4A firmware can be reflashed using ZF’s diagnostic software, but the hardware is application-specific. Reprogramming should only be performed by a certified ZF service center to avoid damaging the transmission control module.
Q: What is the typical lifespan of this TCU in a WG190?
A: Under normal operating conditions, the unit lasts 8-10 years or approximately 500,000 miles. Premature failure is often caused by vibration from a loose FIXING PLATE or moisture ingress through damaged housing seals.
Q: Is the 6073.017.112 a direct replacement for the 6073.017.111?
A: Yes, the .112 supersedes the .111 revision. Both share the same mounting footprint and connector pinout, but the .112 includes updated circuit protection for 24V systems. Always pair it with the correct TRANSMISSION HOUSING to ensure proper grounding.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
