Pinpoint Notes

CAUTION:
^ Before removing and installing the Generic Electronic Module (GEM)/Central Timer Module (CTM) or its connectors, disconnect the battery. Failure to follow this caution will result in the GEM/CTM storing many erroneous Diagnostic Trouble Codes (DTCs) and may result in the GEM/CTM exhibiting erratic operation after installation.
^ Be careful when probing the fuse junction panel, power distribution box or any connectors. Damage will result to the connector receptacle if the probe or terminal being used is too large.
^ Electronic modules are sensitive to electrical charges. If exposed to these charges, damage may result.

NOTE:
^ If continuous DTCs are recorded and the symptom is not present when performing the pinpoint tests, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.
^ Complete the entire pinpoint test related to the symptom before replacing the GEM/CTM.