Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pinpoint Test HU: Intake Air Systems: Introduction
This pinpoint test is intended to diagnose the following:
- air cleaner assembly (including air cleaner element) (9600)
- air inlet tube (9F843)
- clean air tube hose and resonator (9R504) and (9F593)
- intake manifold runner control bank 1 (IMRC1) solenoid (9J559)
- intake manifold runner control bank 2 (IMRC2) solenoid (9J559)
- intake manifold runner control bank 1 (IMRC1) sensor (9P471)
- intake manifold runner control bank 2 (IMRC2) sensor (9P471)
- intake manifold tuning valve (IMTV) (9L490)
- IMTV electric actuator assembly (9L490)
- throttle body assembly (9E926)
- harness circuits: IMRC, IMRC1, IMRC1A, IMRC2, IMRC2A, IMTV, SIGRTN, VPWR and VREF
- PCM (12A650)
| Pin | Circuit |
|---|---|
| 1 | VPWR (Vehicle Power) |
| 2 | IMRC1A (Intake Manifold Runner Control Bank 1 Actuator) |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| F-150, Mustang 5.0L |
A | 2 1 3 |
IMRC1 SIGRTN VREF |
| F-Series Super Duty, Mustang 5.2L |
B | 1 3 2 |
IMRC1 SIGRTN VREF |
| Pin | Circuit |
|---|---|
| 1 | VPWR (Vehicle Power) |
| 2 | IMRC2A (Intake Manifold Runner Control Bank 2 Actuator) |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| F-150, Mustang 5.0L |
A | 2 1 3 |
IMRC2 SIGRTN VREF |
| F-Series Super Duty, Mustang 5.2L |
B | 1 3 2 |
IMRC2 SIGRTN VREF |
| Pin | Circuit |
|---|---|
| 3 | IMTV (Intake Manifold Tuning Valve) |
| 1 | VPWR (Vehicle Power) |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES .
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| F-150, Mustang 5.0L |
306 PIN | E27 E7 E15 |
IMRC2 IMRC1 IMRC1A |
| F-Series Super Duty 6.2L, Mustang 5.2L |
198 PIN | E44 E45 E59 E60 |
IMRC2 IMRC1 IMRC2A IMRC1A |
| All other vehicles | 198 PIN | E5 | IMTV |
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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