DTC P2101:00: Notes

DTC P2101:00 (LF, L5) DETECTION CONDITION AND POSSIBLE CAUSE

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 (Mode 2)/Snapshot data is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Main relay malfunction PCM connector or terminals malfunction Short to power supply in wiring harness between the following terminals: Main relay terminal C-PCM terminal 1A Main relay terminal C-PCM terminal 1B Short to ground or open circuit in main relay circuit Short to ground in wiring harness between the following terminals: Main relay terminal C-PCM terminal 1A Main relay terminal C-PCM terminal 1B Main relay terminal B-PCM terminal 1Q ENG BAR2 20 A fuse malfunction ETV 15 A fuse malfunction Open circuit in wiring harness between the following terminals: Main relay terminal C-PCM terminal 1A Main relay terminal C-PCM terminal 1B Main relay terminal B-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 (Mode 2)/Snapshot data is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

Main relay malfunction
PCM connector or terminals malfunction
Short to power supply in wiring harness between the following terminals:
- Main relay terminal C-PCM terminal 1A
- Main relay terminal C-PCM terminal 1B
Short to ground or open circuit in main relay circuit
- Short to ground in wiring harness between the following terminals:
- Main relay terminal C-PCM terminal 1A
- Main relay terminal C-PCM terminal 1B
- Main relay terminal B-PCM terminal 1Q
- ENG BAR2 20 A fuse malfunction
- ETV 15 A fuse malfunction
- Open circuit in wiring harness between the following terminals:
- Main relay terminal C-PCM terminal 1A
- Main relay terminal C-PCM terminal 1B
- Main relay terminal B-PCM terminal 1Q
PCM malfunction

Courtesy of MAZDA MOTORS CORP.