Overview
The ZF 6073.017.306 TCU ERGOPOWER M/L EC4A is a critical electronic control unit specifically engineered for the WG190 series transmission. This OEM genuine part governs shift logic, clutch modulation, and diagnostic communication within the transmission assembly. Positioned as the central processor for the ERGOPOWER M/L EC4A system, it interprets driver inputs and sensor data to optimize gear engagement. The SKU 6073.017.306 is a direct replacement for failed units, ensuring seamless integration with the TRANSMISSION HOUSING and its associated hydraulic circuits.
Symptoms of Failure
- Erratic or delayed shifting: The TCU fails to process speed signals, causing harsh or hesitant gear changes, especially under load.
- Transmission stuck in limp mode: A worn 6073.017.306 often triggers a permanent fault code, locking the gearbox in a single gear for safety.
- Intermittent loss of communication: The control unit may sporadically drop the CAN bus connection, leading to sudden neutral engagement or warning lights on the dashboard.
- No response to gear selector input: When the TCU degrades, the transmission may ignore commands from the shifter, requiring a hard reset or replacement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 6073.017.306 |
| OEM Reference | ZF ERGOPOWER M/L EC4A |
| Material | Aluminum housing with sealed electronics |
| Weight | 1.2 kg (2.65 lbs) |
| Dimensions (L x W x H) | 210 mm x 140 mm x 55 mm |
| Voltage Range | 12V – 24V DC |
| Operating Temperature | -40°C to +85°C |
| Connector Type | 40-pin AMP |
Compatibility
This TCU is primarily designed for the ZF WG190 series, but it also cross-fits select models in the WG180 and WG200 families due to shared electronic architecture. It is compatible with transmissions using the ERGOPOWER M/L EC4A logic, including those paired with HOUS.FRONT SECT and HOUSING REAR PART assemblies. Always verify the housing variant; units with the HOUSING REAR SECTION may require additional calibration. The 6073.017.306 is not backward-compatible with pre-2000 WG models without a wiring harness adapter.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101085 | TRANSMISSION HOUSING | Encloses gear train and supports TCU mounting |
| 4657201161 | HOUS.FRONT SECT | Front section housing for clutch pack |
| 4657201162 | HOUSING REAR PART | Rear structural housing for output shaft |
| 4657298107 | HOUSING REAR SECTION | Alternate rear housing variant for WG190 |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for TCU bracket |
| 4656301148 | FIXING PLATE | Secures TCU to transmission housing |
| 4657301032 | SCREEN SHEET | Filter screen for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Secondary filter screen for oil return |
| 0636100803 | CAP SCREW | Mounting screw for housing sections |
