Diagnostic Aids

An Intermittent problem may be caused by a poor connection, rubbed through wire insulation, or wire that is broken inside the insulation.

Any circuitry, that is suspected as causing the complaint, should be thoroughly checked for the following conditions.

• Backed-out terminals
• Improper mating
• Broken locks
• Improperly formed
• Damaged terminals
• Poor terminals to wire connection
• Physical damage to the wiring harness

Fig 1: DTC P1673 - CAN Communication Error (ECM Cannot Emit Message) Diagnostic Chart

Courtesy of SUZUKI OF AMERICA CORP.