DTC P2101:00 [L5]: Notes

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DETECTION CONDITION & POSSIBLE CAUSES

DTC P2101:00	Throttle valve actuator circuit range/performance problem
DETECTION CONDITION	The PCM turns the main relay on but the input voltage is 4 V or less , the PCM determines that the main relay control circuit voltage is low The PCM monitors the input voltage from the main relay The PCM turns the main relay off but the input voltage is 4 V or more, the PCM determines that the main relay control circuit voltage is high. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. FREEZE FRAME DATA is available The DTC is stored in the PCM memory
POSSIBLE CAUSE	Fuse malfunction Main relay malfunction PCM connector or terminal malfunction Short to power supply in wiring harness between main relay terminal D and PCM terminal 1A Short to power supply in wiring harness between main relay terminal B and PCM terminal 1Q Short to ground in wiring harness between main relay terminal D and PCM terminal 1A Open circuit in wiring harness between main relay terminal D and PCM terminal 1A Short to ground in wiring harness between main relay terminal B and PCM terminal 1Q Open circuit in wiring harness between main relay terminal B and PCM terminal 1Q PCM malfunction
Courtesy of MAZDA MOTORS CORP.

DTC P2101:00

Throttle valve actuator circuit range/performance problem

DETECTION CONDITION

The PCM turns the main relay on but the input voltage is 4 V or less , the PCM determines that the main relay control circuit voltage is low
The PCM monitors the input voltage from the main relay The PCM turns the main relay off but the input voltage is 4 V or more, the PCM determines that the main relay control circuit voltage is high.

Diagnostic support note

This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
FREEZE FRAME DATA is available
The DTC is stored in the PCM memory

POSSIBLE CAUSE

Fuse malfunction
Main relay malfunction
PCM connector or terminal malfunction
Short to power supply in wiring harness between main relay terminal D and PCM terminal 1A
Short to power supply in wiring harness between main relay terminal B and PCM terminal 1Q
Short to ground in wiring harness between main relay terminal D and PCM terminal 1A
Open circuit in wiring harness between main relay terminal D and PCM terminal 1A
Short to ground in wiring harness between main relay terminal B and PCM terminal 1Q
Open circuit in wiring harness between main relay terminal B and PCM terminal 1Q
PCM malfunction

Courtesy of MAZDA MOTORS CORP.