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.
Additional information about the ACR from Colin Bourassa.
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
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 |
|
||
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 |