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Infotainment Slave Controller (ISC) Replacement Using Pathfinder (SSM73236) — 2015 Land Rover Range Rover Supercharged Service Manual

Infotainment Slave Controller (ISC) Replacement Using Pathfinder (SSM73236)

WARNING: This page is about the Range Rover Base, which is a different variant/trim than selected.
Publication date: 2017-02-24
Reference number: SSM73236

INFOTAINMENT SLAVE CONTROLLER (ISC) REPLACEMENT USING PATHFINDER

INFOTAINMENT SLAVE CONTROLLER (ISC) REPLACEMENT USING PATHFINDER

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM73236, Date of Issue:  February 24, 2017
LAND ROVER: Range Rover/L405; Range Rover Sport/L494
SECTION: Diagnostic Software Hardware

SERVICE INFORMATION

Symptom  000101 Diagnostic Concerns

ISSUE

After fitting a new Infotainment Slave Controller (ISC) it is not possible to access the ISC module menu in PATHFINDER to program the new part. An error may be shown stating:

'Error - Answer to 22 F1 90 was empty'. 

PATHFINDER will then revert back to the 'ECU Diagnostics' summary screen.

CAUSE

PATHFINDER requests information from the 'ISC' that will not be present when the module is in a new and unprogrammed state.

As a result of the ISC not responding to these requests, PATHFINDER assumes that the module is 'Offline'.

ACTION

Please follow the instructions below when replacing the ISC module using PATHFINDER build 51:

  1. Start a PATHFINDER session with the vehicle's original ISC connected to the vehicle.
  2. Once the 'Auto Scan' is complete, select 'ECU Functions'.
  3. From the list of fitted modules, select 'ISC'.
  4. The 'ISC' module menu can now be accessed.
  5. The new 'ISC' should be connected now.
  6. Once the new module is connected select 'Replace ECU'.
  7. The new module programming will now take place.
NOTE: In situations where the vehicle's original 'ISC' is inoperative and will not communicate with PATHFINDER, it will still not be possible to access the ISC module menu.

In this situation, please raise a 'Technical Assistance' (TA).

Technicians - Please rate this SSM and provide comments so that future communications can be improved.

1 = Poor - Basic information provided - The SSM does not help me resolve the customer concern.

3 = Average - Adequate information provided - The SSM partially helps me resolve the customer concern.

5 = Excellent - All required information provided to resolve the customer concern.