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DTC 1E6-12-ECU 5 volt sensor supply 1 out of range
Control Module : ECU
Context:
The Engine Control Unit (ECU) A-9000 provides three independent five volt sensor supplies. The ECU A-9000 mon-
itors each sensor supply voltage to ensure they operate within a given range. If the ECU A-9000 determines that the
voltage for sensor supply 1 is out of range, this fault will occur.
The ECU A-9000 pin numbers associated with sensor supply 1 are A07, A08, A09, A10, A11, A12, and A13.
Cause:
The ECU A-9000 has determined that the sensor supply 1 voltage is out of range.
Possible failure modes:
1.
Faulty battery voltage.
2.
Faulty ECU A-9000 supply voltage.
3.
Faulty ECU A-9000 sensor supply 1 pins.
4.
Faulty ECU A-9000 connector X-9121, corrosion or damage.
5.
Faulty Throttle Valve Actuator (TVA) Z-9001, position sensor wiring or internal failure.
6.
Faulty Exhaust Gas Recirculation (EGR) valve Z-9000, position sensor wiring or internal failure.
7.
Faulty intake manifold pressure and temperature sensor B-9001, wiring or internal failure.
8.
Faulty rail pressure sensor B-9004, wiring or internal failure.
9.
Faulty exhaust manifold pressure sensor B-9005, wiring to internal failure.
10. Faulty camshaft speed sensor B-9017, wiring or internal failure.
11. Faulty ECU A-9000, software.
Solution:
1.
Verify fault is present and active.
Use the Electronic Service Tool (EST) to check the status of this fault.
A. If the fault is present and active, continue with Step 2.
B. If the fault is no longer present or in an inactive state, the fault may be intermittent and not currently active.
Continue with Step 11.
2.
Check the battery voltage.
Charge the battery, then, perform a load test on the battery.
A. If the battery passes the load test, continue to Step 3.
B. If the battery fails the load test, the battery has failed. Replace the battery.
3.
Disconnect the ECU A-9000 connector X-9001.
Check the following pins listed below on the ECU A-9000 and in connector X-9001.
X-9001 pin A07
X-9001 pin A08
Electrical systems - FAULT CODES
Pin
47866583_ 02/12/2015
55.12 [55.DTC] / 128
Physical condition
The pin and connector should be free of corrosion or
damage.
The pin and connector should be free of corrosion or
damage.
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