Digital Throttle Position Sensor Circuit - Test - Perkins 1106D Troubleshooting Manual

SENR9982
Illustration 33
Typical view of the P1 OEM connector pin locations for the diagnostic and Cat data link connectors
(1) Battery ground (GND)
(2) Battery ground (GND)
(3) Battery ground (GND)
(7) Battery +
(8) Battery +
A. Connect the battery wires from the bypass
harness of the Perkins EST to a different battery
that is not on the engine.
Expected Result:
The Perkins EST is operating correctly.
Results:
•
Yes
Repair: Refer to Troubleshooting, "Engine Wiring
Information".
STOP.
•
No
Repair: Perform the following repair:
1. Temporarily connect a test ECM.
Note: The test ECM should be programmed with the
correct software. All parameters should be set to the
same value as the suspect ECM.
2. Remove all jumper wires and reconnect all
connectors.
3. Recheck the system for active diagnostic codes.
4. Repeat the Test Step.
(9) Battery ground (GND)
(10) Battery ground (GND)
(15) Battery +
(16) Battery +
(20) J1939 (CAN) -
5. If the fault is resolved with the test ECM,
6. If the fault returns with the suspect ECM,
7. Verify that the repair eliminates the fault.
STOP.
Digital Throttle Position
Sensor Circuit - Test
System Operation Description:
Use this procedure under the following situation:
Use this procedure if any of the following diagnostic
codes are indicated:
•
91-08 Throttle Position Signal Abnormal
•
41-03 8 Volt DC Supply short to +batt
• 41-04 8 Volt DC Supply short to ground
Also, use this procedure if the digital throttle position
sensor is suspected of improper operation.
Troubleshooting Section
(21) J1939 (CAN) +
(23) Data link (PDL) +
(24) Data link (PDL) +
(40) Keyswitch
reconnect the suspect ECM.
replace the suspect ECM.
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