4.
Any change in the values indicates a poor connection. Was a connector problem found?
 | ▶ Repair the connector. Go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to next step as below |
Disconnect the PCM/ECM connectors and inspect for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Reconnect the connectors.
Connect the GDS and go to “Current Data”.
Monitor PCM/ECM values in Current Data, check and wiggle the harness(es), connector(s), and terminal(s).
Any change in the values indicates a poor connection. Was a connector problem found?
| ▶ Repair the connector. Go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to next step as below |
IG "OFF". Disconnect PCM/ECM connector.
IG "ON".
Measure voltage between terminal 6 of the PCM/ECM harness connector and chassis ground.
Specification : Remain stable at battery voltage
Are circuits remaining stable at battery voltage?
| ▶ Using a GDS, check PCM/ECM software version and upgrade as necessary. If version is the newest one, check PCM/ECM for contamination, deterioration, or damage. Substitute with a known-good PCM/ECM and check for proper operation. If the problem is corrected, replace PCM/ECM and then go to "Verification of Vehicle Repair" procedure. |
| ▶ If voltage fluctuates, check circuit for loose, bent or corroded terminals, Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
