Workshop Manuals Factory service & repair Land Rover
01 Range Rover 2002MY ON Workshop Manual - System Description and Operation - LM - 6th Edition - NAS02 03 04 05 06 07 08 09 ENGINE - V810 11 12 ENGINE MANAGEMENT SYSTEM – V813 14 FUEL DELIVERY SYSTEM – V815 16 17 18 19 20 COOLING SYSTEM – V821 22 MANIFOLDS AND EXHAUST SYSTEM – V823 TRANSFER BOX24 AUTOMATIC TRANSMISSION – ZF 5HP2425 26 DRIVE AND PROPELLER SHAFTS27 28 FINAL DRIVE29 STEERING30 31 SUSPENSION32 33 34 35 BRAKES36 37 38 RESTRAINT SYSTEMS39 40 41 DOORS42 INTERIOR TRIM COMPONENTS43 44 45 SCREENS46 SEATS47 48 SUNROOF49 50 AIR CONDITIONING51 52 53 54 55 56 57 WIPERS AND WASHERS58 59 CHARGING AND STARTING60 61 62 63 64 LIGHTING65 66 BODY CONTROL UNIT67 68 COMMUNICATION DATA BUSES69 70 71 SECURITY72 WINDOWS73 74 75 ENTERTAINMENT AND INFORMATION SYSTEMS76 DRIVING AIDS77 78 INSTRUMENTS
Land Rover L322 Range Rover System Description and Operation78 · INSTRUMENTS
78 · Electrical

Description (page 6 of 7)

Make
Land Rover
Model
Range Rover L322 Range Rover System Description and Operation
INSTRUMENTSDescription · page 6 of 7
background image

INSTRUMENTS

DESCRIPTION AND OPERATION

88-29

Test Function No. 14 – Read Self Diagnostic Error Bytes

l

This function is locked and needs to be unlocked via the procedure in Function Test No. 19. Errors are stored in 
the EEPROM in the form of bytes and are displayed in hexadecimal form. The maximum five errors can be 
scrolled through using the trip reset button and are displayed as follows:

l

'DIAG: 1 90 84 040' – the first number shows the error location number 1 - 5. The following numbers show 
error source code, type of error and frequency of error occurrence.

l

TestBook/T4 must be used to interrogate the EEPROM and convert the hexadecimal values into meaningful error 
descriptions.

Test Function No. 15 – Display of Input/Output Port Status

l

This function is locked and needs to be unlocked via the procedure in Function Test No. 19. The individual ports 
can be scrolled through using the trip reset button.

l

'PORT: A03 11010001' – shows the inputs and outputs for microprocessor 1 in binary format.

l

'PORT: B01 01001110' – shows the inputs and outputs for microprocessor 2 in binary format.

l

This function allows for rapid vehicle diagnostics by displaying the status of each microprocessor inputs and 
outputs in binary format. TestBook/T4 must be used to read the binary code and interpret the code meanings.

Test Function No. 16 – Momentary Value for Engine Oil Temperature

l

This function is locked and needs to be unlocked via the procedure in Function Test No. 19.

This function shows the momentary value for the engine oil temperature which is updated every 200 milliseconds.

l

'OELTMP: 83

°

C' 

l

The ignition must be in position II for the oil temperature to be displayed. The value is derived from a CAN 
message transmitted from the ECM. If an error occurs, the maximum displayable temperature of 207

°

C is 

displayed. The display is only available if set in the coding, if not, only dashes (- - -) are displayed.

Test Function No. 17 – Minute Counter for Radio Controlled Clock

l

This function is allocated for future use. Therefore the following blank message appears: 'RCC-EMPF.: - - - MIN'.

Test Function No. 18 – Dimming Parameters

l

This function is locked and needs to be unlocked via the procedure in Function Test No. 19. This display 
comprises a block of six numbers which define the operating parameters of the instrument pack dimmer.

Test Function No. 19 – Lock/Unlock

l

The unlock code is known as a checksum of the VIN. The VIN can be obtained from Test Function No. 1. The 
numbers of the VIN are added together and the resulting figure equals the checksum. For example, if the VIN is 
XA37295 the checksum will equal 26, which in turn equals the unlock code.

Enter the unlock as follows:

l

When test function No. 19 is entered, 'LOCK : ON' is displayed

l

Press the trip reset button once, 'LOCK : 00' is displayed

l

Press the trip reset button until the unlock checksum is reached, i.e. 26

l

Press the check control button once, all test functions will be unlocked.

NOTE: All test functions will remain unlocked, even when the ignition is switched off.

l

Relock the test functions as follows:

l

Go to test function No. 19 and press the trip reset button, 'LOCK : OFF' is displayed

l

Press the trip reset button a second time, 'LOCK : ON' is displayed

l

Press the check control button or switch the ignition off to relock the test functions.

Parts & tools for this job Staging For Land Rover Range Rover

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.