Overview
The ZF 6073.017.120 TCU ERGOPOWER M/L EC4A is a critical electronic control unit specifically engineered for the WG210 series transmission. This OEM genuine part governs shift timing, clutch modulation, and diagnostic communication within the ERGOPOWER M/L EC4A system. Positioned on the valve body assembly, the TCU interprets sensor inputs to optimize gear engagement and torque converter lock-up. The SKU 6073.017.120 ensures direct replacement without adaptation, maintaining factory-specified performance for heavy-duty commercial vehicles.
Symptoms of Failure
- Erratic gear shifting or delayed engagement: When the TCU fails, the transmission may hesitate between gears or exhibit harsh shifts, often accompanied by a check engine light.
- Transmission stuck in limp mode: A worn 6073.017.120 unit can force the WG210 into a reduced-power state, limiting speed to 30-40 mph to prevent internal damage.
- Intermittent loss of communication with diagnostic tools: Faulty internal circuitry prevents the TCU from transmitting data, making fault code retrieval impossible.
- Unexpected torque converter lock-up or slip: The TCU’s inability to regulate solenoid current leads to fuel economy loss and overheating.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 6073.017.120 |
| OEM Reference | ZF ERGOPOWER M/L EC4A |
| Material | Die-cast aluminum housing with epoxy-sealed PCB |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (L x W x H) | 210 mm x 145 mm x 55 mm |
| Operating Voltage | 12V DC (10-16V range) |
| Connector Type | 48-pin AMP/TE |
| Sealing | IP6K9K rated |
Compatibility
This TCU is designed for the ZF WG210 series, but it also fits select models in the WG180 and WG200 families when used with the correct HOUS.FRONT SECT (4657201161). The unit is compatible with ERGOPOWER M/L EC4A variants in WG210, WG211, and WG212 transmissions. For proper installation, always pair the TCU with the 螺栓 (0636115293) for secure mounting and the O-RING (0634313603) to seal the hydraulic interface. Additionally, the CYLINDRICAL PIN (0631306816) ensures precise alignment during assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657201161 | HOUS.FRONT SECT | Front housing section for TCU mounting |
| 0636115293 | 螺栓 | Mounting bolt for TCU attachment |
| 0634313603 | O-RING | Hydraulic seal for valve body interface |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise TCU positioning |
| 0636100801 | CAP SCREW | Fastener for housing cover |
| 4656301148 | FIXING PLATE | Bracket to secure wiring harness |
| 4657301032 | SCREEN SHEET | Debris filter for oil circuit |
| 4657301033 | SCREEN SHEET | Secondary oil strainer |
| 0636100803 | CAP SCREW | Alternate fastener for valve body |
| 4681301040 | OIL FEED.HOUSG. | Oil supply housing for lubrication |
