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SPA missing from bus

Read the instructions below then start the fault diagnostic procedure.

Symptom: SPA missing from bus

SPA missing from bus



Fault symptoms

SPA missing from bus

Condition

None

Diagnostic help

Check the fuse that supplies the SPA control module, and the ground connection.

Check the power supply at the control module.

Check the bus cables to the control module.

Check that the pin in the control module connector has not been dislodged.

Checking the wiring harness

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic tool during the test.