Rover Mini Electronic Fuel Injection

Rover Mini Electronic Fuel Injection Parts List

Additional Information on PC Based Code Reader
http://www.pscan.eu
A new company based in the UK selling low cost diagnostic tools
for Rovers and MGs.  We already cover MEMS2J and have MEMS1.6 working in
the lab and soon available for customers.  Mini airbag controllers are
also working.

Sykes Pickavant ACR

The SP ACR is a moderately priced code reader that will work with both SPi and MPi Minis. There are several models: older 2 line gray case, 2 line blue case and the most recent 4 line blue case. The "line" refers to the number of lines of displayed information. A 2 line unit requires scrolling to see all information. The 4 line unit also has the ability to store and download information to a PC.

Information specific to a model of car is contained in a "pod." There are pods for a variety of makes and models. There are three versions for Rover cars. Rover Pod 2 does not function with any of the fuel injected Minis. Rover Pod 1 will work with the SPi Mini and Rover Pod 3 will work with both. SP now makes an MAP(Multi Application Pod). The special pod is updated from a CD that is available via subscription. Updates are made available approximately 3 times a year. The most recent MAP update for Rover includes the ability to program the immobiliser and key fobs.

A connecting cable is also required for communicating with the ECU. There are different cables for the SPi and MPi.

Link to components parts list

Additional information about the ACR from a third party.

SP ACR - Gray 2-Line Unit SP ACR - Blue 4-Line Unit

MPi Information Screens with Rover Pod 3 (MEMS 2J)

1. Read Error Codes
2. Clear Error Codes
3. Actuators
4. Components
5. Stepper Adjust
6. Not Used for MPi
7. Exit Menu

4. Components
1. RPM
Revolutions per minute
2. Coolant temp Temp in ° C
3. Inlet Air Temp Temp in ° C Expect 20°  to 50°  on hot engine
4. MAP Sensor Strategy manifold pressure in kPA, expect 100 kPA Key on and 30 kPA at fast idle
5. Throttle Position Strategy throttle position (in ° ) dependant on pedal position, expect 4.5°  upwards
6. Throttle Switch (On or Off) depends on pedal position, expect off no load and on with load
7. Battery Voltage Strategy battery voltage in volts, expect nominal battery voltage (12.5 - 14.5) engine running
8. O2 Volts Bank 1 O2 volts Oxygen Sensor Bank 1 (pre-catalyst) in mV
9. Feedback BNK1 ST (On or Off)
10. Coil1 Chrg Time Time in mSec commonly referred to as "dwell" or coil "on" time
11. Coil2 Chrg Time Time in mSec commonly referred to as "dwell" or coil "on" time
12. Injector 2 P/W- Pulse width (in mSec) Injector duration or "on" time
13. Injector 4 P/W- Pulse width (in mSec) Injector duration or "on" time
14. Stepper Position Stepper motor position in steps, depends on idle control requirements, more steps indicate greater level of control
15. Crank Sync Reference data only
16. Cam Signal Reference data only
17. Ignition Switch Status on or off
18. Air Cond Request (Must have been used for Japanese export cars)

MPi Engine Data (from workshop manual)

Engine
Type / Capacity 12A2LK70/1275 cm3
Firing order 1 - 3 - 4 - 2
Compression ratio 10.0 : 1
Idle speed, controlled by the ECM *  900 æ 50 rev/min
Exhaust gas CO content at idle less than 04% hot
Ignition timing at idle speed ¸c 12°BTDC (nominal)
Valve rocker clearance (cold)  0.27 to 0.33 mm
Ignition Coil
Type Quad type dry
Part No NEC 1000710
Primary resistance at 20°C 0.41 to 0.61 ohm
Secondary resistance at 20°C 6200 to 6700 ohm
Consumption at engine idle speed 4.7 to 6.7 amps
Spark Plugs 
Type NGK BPR6E
Plug gap 0.80 to 0.90 mm
Engine Management System
Type Two point injection
MEMS ECM MNE 104290
Fuel pump module WFX 100810
Injector/fuel pressure regulator MKW 10016
Fuel pressure 3.0 æ 0.2 bar constant
Throttle position (TP) sensor MJC 10020
Intake air temperature (IAT) sensor NNK 10001
Crankshaft position (CKP) sensor ADU 7340
Camshaft position (CMP) sensor NSC 100390
Engine coolant temperature (ECT) sensor MEK 100060
Heated oxygen sensor (HO2S) MHK 10004
TP sensor voltage:
Throttle closed 0 to 1v
Throttle open 90° 4 to 5v
Throttle open 65 ° 3 to 4v
Fuel grade 95 RON minimum - UNLEADED fuel

 

SPi Information Screens with Rover Pod 1

1. RPM
Revolutions per minute
2. Idle Switch Closed/Open - Closed at Idle -Post 1993 SPI's do no have the switch, the ECU is interpreting the TPS as closed
3. P/N Switch Closed/Open - Closed at startup - Only for Auto -  Shorted on Standard
4. MAP Sensor Strategy manifold pressure in kPA, expect 100 kPA Key on and 30 kPA at fast idle
5. Coolant temp Temp in ° C
6. Inlet Air Temp Temp in ° C Expect 20°  to 50°  on hot engine
7. Ambient Temp

Reads 200° C engine off

Calculated value from other sensors

8. Battery Voltage Battery voltage in volts
9. Throttle Pot in Volts
10. Lambda Volts O2 volts Oxygen Sensor Bank 1 (pre-catalyst) in mV

SPi Engine Data (from workshop manual)

Engine
Type/capacity 12A2EF77/1274 cm3
Firing order 1-3-4-2
Compression ratio 10.1:1
Idle speed controlled by ECU 850±25 rev/min
Exhaust gas CO content at idle 05% max Not adjustable
Ignition timing at idle speed:
Vacuum connected 15° BTDC + 10° to -11 ° for idle speed control
Valve/rocker clearance (cold) 027 to 033 mm
Programmed ignition
Distributor NJC 10034
Distributor rotor arm Resistive type 1
Rotation Anti - clockwise
Crankshaft sensor ADU 7340
Ignition coil
Type AUU 1326 or ADU 8779
Primary resistance at 20°C 071 to 081 ohm
 Consumption - engine idling 025 to 075 amp average
Spark plugs
Type GSP 4462
Gap 085 ± 005 mm
Electronic fuel injection
Type Indirect single-point injection with ECU control using speed/density method of air flow measurement
MEMS - ECU MNE 101070  (Different ECUs were used during the production of the SPi)
Injector and pressure regulator unit JZX 3300
Fuel pressure 1.0 bar ± 40% constant
Lost motion gap at idle speed Equal either side of lever
Throttle potentiometer voltage:
Throttle closed 0 to 1 V
Throttle open 4 to 5 V
Fuel grade 95 RON minimum - UNLEADED fuel

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