Pressurized engine control fuel injection and ignition system, testing of electrical system

AD07.52-D-6000A

Pressurized engine control fuel injection and ignition system, testing of electrical system

23.5.97



PEC fuel injection and ignition system diagnosis previous knowledge

AD07.52-D-2000A



Battery voltage 11 up to 14 V



HHT connected to diagnostic socket



Remove left headlamp unit

AR82.10-D-4730B



Connect test wiring harness with socket box at ME-SFI control unit according to connection diagram.

 Do not unplug control unit sockets unless ignition switched off

AD07.52-D-2000-08A



PMS system complete (all connectors connected)



Cables, connectors and plug connectors are covered by the test with the HHT and may have to once again tested separately, if a fault is displayed, for open circuit, good contact and correct connection on the basis of the valid wiring diagram.



Use of testers

Clip on and unclip secondary pickup at corresponding ignition line and trigger clamp at cylinder 1 only when engine is stationary and ignition OFF.

Check

1

Coolant temperature sensor

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-01A

2

Intake air temperature sensor

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-02A

3

Intake manifold pressure control unit

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-03A

4

Throttle valve positioning motor

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-28A

5

Throttle valve actual value potentiometer Electric Test

PMS gasoline injection and ignition system

AD07.52-D-6000-05A

6

Drive actual value potentiometer

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-06A

7

Idle speed control Electrical Test

PMS gasoline injection and ignition system

AD07.52-D-6000-07A

8

O2sensor Electrical Test

PMS gasoline injection and ignition system

AD07.52-D-6000-08A

9

O2sensor heating current PMS gasoline injection and ignition system electric test

AD07.52-D-6000-09A

10

Lambda control Electric Test

PMS gasoline injection and ignition system

AD07.52-D-6000-10A

11

Injection valve cylinder 1 and 4

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-11A

12

Injection valve cylinder 2 and 3

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-12A

13

Idle speed self-regulation PMS gasoline injection and ignition system Electric Test

AD07.52-D-6000-13A

14

Partial load factor self-adaptation

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-14A

15

Ignition output stage 1 cylinder 1 and 4

Electrical system testing

PMS gasoline injection and ignition system

Vehicles with drive authorization system, bushing 27, (2.10)

AD07.52-D-6000-15A

16

Ignition output stage 1 cylinder 1 and 4

Electrical system testing

PMS gasoline injection and ignition system

Vehicles with drive authorization system, bushing 28, (2.11)

AD07.52-D-6000-15B

17

Ignition output stage 2 cylinder 2 and 3

Electrical system testing

PMS gasoline injection and ignition system

Vehicles with drive authorization system, bushing 27, (2.10)

AD07.52-D-6000-16B

18

Ignition output stage 2 cylinder 2 and 3

Electrical system testing

PMS gasoline injection and ignition system

Vehicles with drive authorization system, bushing 28, (2.11)

AD07.52-D-6000-16A

19

Crankshaft position sensor

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-17A

20

Variable balance resistor Elektric Test

PMS gasoline injection and ignition system

AD07.52-D-6000-18A

21

Control unit (TN speed signal)

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-19A

22

Speed self-regulation PMS gasoline injection and ignition system Electric Test

AD07.52-D-6000-20A

23

Fuel pump relay PMS gasoline injection and ignition system Electric Test

AD07.52-D-6000-21A

24

Purge control valve

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-22A

25

Short-time self-regulation

Electrical system testing

PMS gasoline injection and ignition system

AD07.52-D-6000-23A

26

Control unit electrical test

PMS gasoline injection and ignition system

AD07.52-D-6000-24A

27

Immobilizer electrical test

PMS gasoline injection and ignition system

AD07.52-D-6000-25A

28

Exhaust flap electrical test

PMS gasoline injection and ignition system

AD07.52-D-6000-26A