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DTC P1650: Notes

DTC P1650 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P1650 PSP switch out of self-test range
DETECTION CONDITION 
  • In the KOEO self-test, this DTC indicates the PSP input to the PCM is high. In the KOER self-test, this DTC indicates the PSP input did not change state.
POSSIBLE CAUSE 
  • The steering wheel must be turned during KOER self-test
  • PSP switch malfunction
  • Open circuit between PSP switch terminal A and PCM terminal 2I
  • Short to ground circuit between PSP switch terminal A and PCM terminal 2I
Fig 1: PSP Switch Circuit Diagram
G04969309Courtesy of MAZDA MOTORS CORP.