DTC 16

DTC 16 - System Voltage High/Low:

System Voltage Wiring Circuit:

Circuit Description:

The PCM monitors system voltage on CKT 439 to terminal "BA2". If the PCM detects voltage above 17 volts or below 9 volts for more than 10 seconds, it will turn the MIL "ON" and set DTC 16 in memory.

Test Description: Number(s) below refer to circled number(s) on the diagnostic chart.
1. Test generator output to determine proper operation of the voltage regulator. Run engine at moderate speed and measure voltage across the battery. If less than 9 or over 17 volts, repair generator.

Diagnostic Aids:

An intermittent may be caused by a poor connection, rubbed through insulation, a wire broken inside the insulation or poor PCM grounds.

Check for:
^ Poor Connection or Damaged Harness - Inspect PCM harness connectors for backed out terminal "BA2", improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wire connection and damaged harness.
^ Intermittent Test - Monitor BATT/IGN VOLTS display with a Tech 1 while moving related connectors. If the failure is induced, the display will abruptly change. This may help to isolate the location of the malfunction. An engine stall while manipulating the harness indicates that the PCM has lost voltage at terminal "BA2". Check for loose connectors in CKT 439.

NOTICE:
^ Charging battery with a battery charger while starting the engine may set a DTC 16.
^ When DTC 16 is set, the transaxle will be forced to 3rd gear. This is to avoid erratic shifting due to improper voltages.