(Table 102, contd)
Troubleshooting Test Steps
Values
Results
4. Check the Engine Wiring Harness
A. Turn the keyswitch to the OFF position.
B. Disconnect the primary speed/timing sensor. Disconnect
the P2 ECM connector.
C. Measure the resistance between pin 1 on the harness con-
nector for the primary speed/timing sensor and P2:59.
D. Measure the resistance between pin 2 on the harness con-
nector for the primary speed/timing sensor and P2:44.
Less than 5
Ohms
Result:
At least one of the resistance measurements is greater
than 5 Ohms.
The fault is in the wiring between the primary speed/timing sen-
sor and the P2 connector.
Check all wiring between the primary speed/timing sensor and
the ECM. Refer to the appropriate Electrical Schematic.
Replace the faulty wiring. Use the electronic service tool to
clear all logged diagnostic codes and verify that the repair elimi-
nates the fault.
Result:
Both resistance measurements are less than 5 Ohms.
Proceed to Test Step 10.
5. Check the Sensor Supply Voltage at the Sensor
Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the secondary speed/timing
sensor.
C. Turn the keyswitch to the ON position. Do not start the
engine.
D. Measure the voltage between pin 1 and pin 3 on the har-
ness connector for the secondary speed/timing sensor.
E. Turn the keyswitch to the OFF position.
F. Reconnect the connector for the secondary speed/timing
sensor.
4.9 V to 5.1 V
Result:
The measured voltage is not within the expected
range.
The fault is in the wiring between the secondary speed/timing
sensor and the P2 connector.
Replace the faulty wiring.
Use the electronic service tool to clear all logged diagnostic co-
des and verify that the repair eliminates the fault.
Result:
The measured voltage is within the expected range.
Proceed to Test Step 6.
6. Check for Signal Voltage at the Sensor Connector
A. Turn the keyswitch to the OFF position.
B. Disconnect the connector for the secondary speed/timing
sensor.
C. Turn the keyswitch to the ON position. Do not attempt to
start the engine.
D. Measure the voltage between pin 1 and pin 2 on the har-
ness connector for the secondary speed/timing sensor.
E. Turn the keyswitch to the OFF position.
F. Reconnect the secondary speed timing sensor.
4.52 to 4.72 V
Result:
The measured voltage is within the expected range.
Replace the secondary speed/timing sensor. Refer to Disas-
sembly and Assembly, “Camshaft Position Sensor - Remove
and Install” for the correct procedure.
Start the engine. Use the electronic service tool to clear all
logged diagnostic codes and verify that the repair eliminates
the fault.
Result:
The measured voltage is not within the expected
range.
Proceed to Test Step 7.
(continued)
UENR0612
215
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