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TCM E39 / P2729 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Message appears in display.

  P2729 00


Solenoid SLB Circuit, Open/Short to Ground

Fault symptom

Message appears in display.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Battery voltage must be between 10.2 - 15.5 V.
Selector lever in position D.
Engine speed over 400 rpm.
TCM not in Limp Home
The following diagnostic trouble codes may not be generated:
P2730

Fault criteria:

Current consumption is below 23 mA.
The fault criterion must be met for at least 100 ms 5 times.

System reaction to a fault:

Limp home

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
SLB1 Commanded Pressure
SLB1 Commanded Current
SLB1 Actual Current
Activation:
SLB1 Commanded Current
(See also description of readings/activations in diagnostic tool)