TEST
ACTION
APPLICABILITY
4
Turn the ignition off. Disconnect the AMBIENT/BATT temperature sensor connector.
Disconnect the PCM harness connectors.
Measure the resistance between the AMBIENT/BATT temperature sensor Signal
circuit and the Sensor Ground circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the shorted circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
Go To
5
5
If there are no possible causes remaining, view repair.
All
Repair
Replace the PCM.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
6
Turn the ignition off.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB) that may apply.
Perform a wiggle test on the related wiring harnesses with the engine running.
Were any problems found?
All
Yes
→
Repair wiring harness/connectors as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 3.
No
→
Test Complete.
21
CHARGING
P1493-AMBIENT/BATT TEMP SEN VOLTS TOO LOW —
Continued