TB 9-2320-279-13&P-4
0024
ENGINE
ECM
ENGINE
COMPARTMENT
VIH CONNECTOR
MC21
Figure 42.
2. Connect negative (-) probe of multimeter to a known good ground.
3. Multimeter should display a reading less than 200 ohms. Note reading.
CONDITION/INDICATION
Is continuity measured between wire 151D at engine harness connector MC21, terminal B and a known good
ground?
DECISION
No - Test 40 - Can engine harness wire 150/151D be repaired?
Yes - Test 41 - Does high idle operate after swapping high idle active relay R10 with a known good relay?
TEST 40 - Can engine harness wire 150/151D be repaired?
WARNING
Remove all jewelry such as rings, ID tags, bracelets, etc. prior to working on or around vehicle.
Jewelry and tools can catch on equipment, contact positive electrical circuits, and cause a direct
short, severe burns, or electrical shock. Failure to comply may result in injury or death to
personnel.
Do not smoke or have open flame near batteries. Batteries may explode from a spark. Battery
acid is harmful to eyes and skin. Failure to comply may result in injury or death to personnel.
