FAILURE DIAGNOSIS
1-34
TNV DI Service Manual
DTCs (Diagnostic Trouble Codes) General Description
Atmospheric pressure sensor (option)
(1) P2228/4: Failure with Atmospheric Pressure Sensor (Low Voltage)
DTC Detecting Conditions
Movement at Error occurrence
Estimation of Failure cause/Error condition
• The connector may not be properly connected.
• Wiring defect of the harness
•
The atmospheric pressure sensor's signal wires may be disconnected or short-circuited with GND.
•
The SENSOR 5V wire may be disconnected or short-circuited with GND.
•
The SENSOR GND wire may be short-circuited with POWER SUPPLY (*NOTE).
*NOTE) If the SENSOR GND wire is short-circuited with POWER SUPPLY, the E-ECU's power supply line fuse
10A might be blown.With this fuse blown, the E-ECU may fail to detect/indicate the error, and to store
the error history.
• The atmospheric pressure sensor may be faulty.
•
Sensor output defect by a disconnection of the atmospheric pressure sensor inner wiring or a sliding
resistance increase
• The E-ECU internal circuitry may be faulty.
DTC
P2228/4
Failure with Atmospheric Pressure Sensor (Low Voltage)
1 - Precondition; 2 - Detecting condition(s);
3 - Flashing pattern of failure indicator
Check points
1. Key switch ON.
2. Sensor voltage 0.2 [V] or higher.
3. One flash followed by nine flashes.
Harness
Atmospheric pressure sensor
Error Mode
[Run Under Restrictions]:
The engine continues to run with the atmospheric pressure unchanged from the pre-
error value.
Run restricted?
Yes: The altitude compensation function is disabled.
Recovery
Conditions
No.
Remarks
TNV_DI_SM_A4-Troubleshooting.book 34 ページ ２００７年１１月１５日 木曜日 午後５時２７分
