Description
Supply Cable To The START-STOP Capacitor For E‑HDi Engines In Citroën, Peugeot And DS Vehicles.
This Start-Stop supply cable (part number 9677185380) is designed for e‑HDi diesel engines and connects the Start‑Stop capacitor to the vehicle electrical system. It ensures stable power flow during engine stop/start events, supports energy recuperation when the engine is turned off and provides a reliable connection between the capacitor and the vehicle wiring loom. The harness is commonly searched by its OEM number 9677185380 and is suitable for technicians and experienced DIYers who service Start‑Stop systems on PSA Group vehicles.
Compatibility And Typical Applications
Fits vehicles equipped with e‑HDi Start‑Stop systems from the Stellantis/PSA family. Typical models include Citroën C4 II, Citroën C4 Picasso, DS4, Peugeot 3008 I, Peugeot 308, and Peugeot 5008 I. Confirm model year and engine type before installation to ensure the vehicle uses the same Start‑Stop capacitor arrangement.
Function And Common Faults
The harness transmits current between the Start‑Stop capacitor and the vehicle electrical network. It plays a key role during engine stop/start cycles by providing a short‑term power reserve and smoothing voltage dips. Failures usually manifest as Start‑Stop system warnings, inability to engage Stop mode, or intermittent electrical faults. Common causes of failure include connector corrosion, insulation abrasion, heat damage near the engine bay, rodent damage, and broken conductors from vibration or poor routing.
How To Replace
Replacement should be performed by a trained technician or an experienced DIYer familiar with PSA Start‑Stop systems. Basic replacement steps:
- Park the vehicle on a flat surface, engage the parking brake and switch off all electrical consumers.
- Disconnect the negative battery terminal before starting work to avoid short circuits and undesired electrical events.
- Locate the Start‑Stop capacitor and trace the supply cable to its connectors and mounting clips.
- Carefully unplug connectors, taking note of any locking tabs. Do not force a stuck connector; inspect for corrosion or retained clips.
- Remove any cable ties or retainers and extract the old harness, noting its routing to avoid chafing against hot or moving components.
- Install the new harness following the original routing, secure with clips or ties, and reconnect connectors firmly.
- Reconnect the battery and verify Start‑Stop operation through several stop/start cycles. Check for fault codes with a diagnostic tool if available.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C4 II; Citroën C4 Picasso; DS4; Peugeot 3008 I; Peugeot 308; Peugeot 5008 I
- Product Codes: 9677185380
- Other Numbers: —
Recommendations For Installation
Always disconnect the battery before working on the Start‑Stop wiring. Follow original routing to avoid contact with exhaust components and moving parts. Clean and inspect mating connectors for corrosion; apply dielectric grease if appropriate. Use proper clips and cable ties to prevent vibration wear. After installation, run a complete functional check of the Start‑Stop system and clear any logged fault codes with a compatible diagnostic tool.
Why This Part Fails Most Often
Failures are typically caused by environmental and mechanical factors rather than electrical design faults: moisture ingress and connector corrosion, mechanical abrasion from poor routing, heat exposure in the engine bay, rodent chewing and fatigue from vibration are the most frequent issues. Addressing routing and securing the harness during replacement greatly reduces the chance of repeat failures.
