Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
![]() | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Go to next procedure. |
IG "ON" & ENG "OFF".
Disconnect the connectors of IPM, PDM, ESCL.
Measure resistance between IMMO TX terminal and chassis ground.
Specification : ∞ Ω
Is the measured resistance within specifications?
![]() | ▶ Substitute with a known - good PDM and check for proper operation. If the problem is corrected, replace the unit and go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known - good fob holder and check for proper operation. If the problem is corrected, replace the unit and go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Repair as necessary and go to "Verification of Vehicle Repair". |