Configuration and learning

SC001 AND CF088: ECU CALIBRATION

INSTRUCTIONS

To be applied, among other cases, when replacing the electric power steering ECU.

Command CF008 will be carried out later using the specific command SC001 "ECU calibration".

IMPORTANT:

The ECU contains four different calibrations. Therefore, select the assistance law.

The ECU is supplied with configuration law 0 by default.

An unsuitable calibration level may lead to degraded performance.

Calibration procedure:

• connect the diagnostic tool,
• read the electric power steering diagnosis,
• select configuration CF088 "ECU calibration",
• configure the ECU according to the assistance level defined for the vehicle concerned (see the instruction associated with the command on CLIP),
• exit diagnostic mode without switching off the tool (close the application only),
• switch off the ignition,
• wait 15 seconds for the "power latch" to end, then restart,
• read back the configuration for confirmation (LC005).

LC005: ECU CALIBRATION

Configuration 0: An uncalibrated or new ECU will always be calibrated to configuration 0. This is the default calibration law. Configuration 1: K9K engine with manual gearbox, or K4J and K4M engines with manual or automatic gearbox, fitted with 16-inch wheels or smaller. Configuration 2: K9K engine with automatic gearbox, or F4R and F9Q engines with manual or automatic gearbox, fitted with 16-inch wheels or smaller. Configuration 3: K9K engine with manual gearbox, or K4J and K4M engines with manual or automatic gearbox, fitted with 17-inch or larger wheels. Configuration 4: K9K engine with automatic gearbox, or F4R and F9Q engines with manual or automatic gearbox, fitted with 17-inch or larger wheels.

If the ECU calibration is not the desired one, change the configuration using command CF088 or SC001.

CF085: steering wheel angle sensor learning

INSTRUCTIONS

To be applied, among other cases, when replacing the electric power steering ECU.

IMPORTANT

The steering wheel angle configuration is the learning of the 0 angle. It must be performed on any new (blank) ECU and whenever this sub-section requires it.

If this angle is missing or incorrectly learned, the “service” warning light will come on (see “warning light activation strategy”) and a Dynamic Driving Control fault will occur.

Learning procedure:

• start the engine
• turn the steering wheel to the left lock, then to the right lock
• reposition the vehicle with the wheels straight and the steering at centre point
• select command CF085
• while the status shows “command in progress”, turn the steering wheel a quarter turn to the left; the status then changes to “command completed”
• switch off the ignition and wait at least 15 seconds before switching it back on, for the learning to be taken into account
• turn the steering wheel to the left lock, then to the right lock
• check the value of the steering wheel angle sensor status
• check for faults:

• if faults are present, apply the corresponding procedure, then run the configuration again
• if there are no faults, learning is complete

LC012: steering wheel angle sensor learning

STATE 1: Not calibrated and not indexed.
STATE 2: Not calibrated and indexed.
STATE 3: Calibrated and not initialised.
STATE 4: Calibrated and initialised.