Diagnostic Procedures

1. Checking The Engine Speed Sensor's Ground Connection





Unplug the connector
- Speed sensor, input shaft. gearbox (532)

When Disconnected:
Go To Step 2

2. Checking The Engine Speed Sensor's Ground Connection

Part 1 Of 2:

Part 2 Of 2:

- Connect test lamp 86 11 857 between B+ and pin 2 of the male connector.





- The test lamp should light.

Checking the Wiring harness.
Jiggle the leads and in-line connectors at several places and indifferent directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.

Is the function correct?

NO
Go To Step 3

YES
Go To Step 4

3. Rectifying The Lead





Repair or replace the lead between pin 2 of the engine speed sensor and pin 45 of the control module.

When repair is complete:
Go to step 8

4. Checking The Control Module's Input For Input rpm





Turn the ignition switch to the OFF position.

When complete:
Go to step 5

5. Checking The Control Module's Input For Input rpm





Take a resistance reading between:

- Pin 1-Speed sensor, input shaft, gearbox
- Pin 2-Speed sensor, input shaft, gearbox

The reading should be 2 K-Ohm - 2.4 K-Ohm

Checking the wiring harness.
Jiggle the leads ads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp of diagnostic tool while doing this.

Is the function correct?

NO
Go To Step 6

YES
Go To Step 7

6. Rectifying The Lead





Repair or replace the lead between pin 1 of the engine speed sensor and pin 44 of the control module.

When repair is complete:
Go to step 8

7. Changing Components





- Change - Speed sensor, input shaft, gearbox

When repair is complete:
Go to Step 8

8. Final Check





- Clear the diagnostic trouble codes in all systems.

Carry out a drive cycle:





- Drive the car at varying engine loads and engine rpm for five minutes.

Evaluate the drive cycle,





- Check that the diagnostic trouble code has not recurred

Is the function correct?

NO
Go To Step 9

YES
Go To Step 10

9. Final Check
See Before changing a control module, refer to General Fault Diagnosis.
- Diagnosis for this fault code is complete.

10. Final Check
The steps taken to correct the fault were correct.
- Diagnosis is complete.