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Diagnostic Manual, Chassis and Drivetrain,
Volume 2

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LOCATION:    4.1 Automatic Locking Differential (ASD)   >   12 Diagnosis - Complaint Related Diagnostic Chart


Diagnosis - Complaint Related Diagnostic Chart

Complaint/Problem Possible cause Remedy/Test step
ASD warning lamp (A1e25) does not come on, ASD MIL (A1e24) comes on with Ignition: ON.
Wiring between N30/2 and A1e25,
Bulb,
Electronic part of A1e25,
N30/2.
23 4.0
ASD warning lamp (A1e25) does not change intensity when turning on exterior lamps with Ignition: ON. Electronic part of A1e25. Electronic part of A1e25.
ASD MIL (A1e24) does not come on, ASD warning lamp (A1e25) comes on with Ignition: ON. Wiring between N30/2 and A1e25,
Bulb,
N30/2.
23 5.0
ASD warning lamp (A1e25) and ASD MIL (A1e24) stay on continuously with engine running. Wiring between N30/2 and circuit 61e,
No voltage on circuit 61e,
N30/2.
23 2.0,
If there is no voltage on circuit 61e, this will also be evident on the generator charge indicator lamp (A1e5). Check wiring, generator and voltage regulator,
N30/2.
ASD warning lamp (A1e25) and ASD MIL (A1e24) do not come on with Ignition: ON. Wiring,
N30/2,
Overvoltage protection relay module (K1/2),
Circuit board in instrument cluster.
23 1.0