FAILURE DIAGNOSIS
1-10
TNV DI Service Manual
DTCs (Diagnostic Trouble Codes) General Description
(2) P1203/3: Failure with Rack Position Sensor (High 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 SENSOR GND wire may be disconnected.
•
The rack position sensor signal wire may be short-circuited with POWER SUPPLY.
•
The rack actuator wiring may be short-circuited with GND (with engine running).
• The rack position sensor may be faulty.
•
Output defect of the rack position signal by a disconnection or a short circuit of the inner wiring
• The rack actuator may be faulty.
•
The rack actuator inner wiring may be short-circuited with GND (with engine running).
• The E-ECU internal circuitry may be faulty.
DTC
P1202/3
Failure with Rack Position Sensor (High Voltage)
1 - Precondition; 2 - Detecting condition(s);
3 - Flashing pattern of failure indicator
Check points
1. Key switch ON.
2. The sensor voltage upper limit and above [at E-ECU activation,
engine running]
3. Seven flashes.
Connector
Harness rack position sensor
Rack actuator
E-ECU
Detection at the engine start
Detection at the engine running
Error Mode
[Run Under Restrictions]:
Start the engine in on-error engine control
mode.
It takes 1 to 10 seconds from the starter’s
rotation to the engine start.
[Stop Immediately]:
The engine stops running.
Run restricted?
Yes: • The High idle is restricted to one of
the following, whichever smaller:
•
80% of the pre-error High idle speed
•
150% of the Low idle speed
• The fuel injection rate is restricted.
Yes: The rack actuator relay is turned
OFF, and the rack position is forcibly
set to the engine stop position.
Recovery
Conditions
No.
No.
Remarks
The High and Low idle speeds must be
equal to those specified in the engine
specifications.
TNV_DI_SM_A4-Troubleshooting.book 10 ページ ２００７年１１月１５日 木曜日 午後５時２７分
