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 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 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 female connector pin 2 and control module pin 30.

When repair is complete:
Go to step 8

4. Checking The Engine Speed Sensor's Ground Connection





Turn the ignition switch to the OFF position.

When completed:
Go To Step 5.

5. Checking The Engine Speed Sensor's Ground Connection





Take a resistance reading between

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

The reading should be 66 K-Ohm - 60 K-Ohm

Checking the wiring harness.
Jiggle the leads 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 or 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 female connector pin 1 and control module pin 15.

When repair is complete:
Go to step 8

7. Changing Components





- Change - Speed sensor, output shaft, gearbox

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.