Instruments - Inoperative/No Start Condition
TSB 06-10-705/29/06
NO START WITH INSTRUMENT CLUSTER
INOPERATIVE
FORD:
2006 Explorer
2007 Explorer Sport Trac
MERCURY:
2006 Mountaineer
This article supersedes TSB 05-23-5 to update the vehicle model years.
ISSUE
Some 2006 Explorer 4dr/Mountaineer and 2007 Sport Trac vehicles may exhibit a no crank condition with an inoperative instrument cluster. These clusters may have an internal component that has failed, which causes a failure condition which may or may not be intermittent.
ACTION
Perform the following procedure to isolate any fuse, circuit, pin fit, or connector issues. If tests do not isolate any fuse, circuit, pin fit, or connector issues replace the instrument cluster.
SERVICE PROCEDURE
1. Limited Mode Check
a. With the driver's door open, insert the ignition key into the ignition switch and leave in the OFF position.
(1) Listen for the chime.
(2) Within 7 seconds of inserting the key in the ignition, press the reset button (located in the cluster for low series or on the I/P center finish panel on the high series) and look for the odometer display.
b. If the chime and the odometer display are present, the cluster is OK and normal diagnostic procedures for a no-start condition should be followed.
c. If the chime or the odometer display is not present, proceed to Step 2.
2. Key-On Check
a. Turn the key to the ON position. Using a Scan Tool, check for communication with the cluster.
b. If communication is established with the cluster, check for DTCs and follow normal diagnostic procedures.
c. If communication is not established, proceed to Step 3.
3. Check HSCAN Bus
a. Disconnect the negative battery terminal.
b. Using a Digital Volt Ohm Meter (DVOM), check for a short to ground between the DLC (Data Link Connector) C251 Pin 6 to ground.
c. If the resistance is less than 100k ohms, repair circuit. If greater than 100k ohms, proceed to Step 3d.
d. Using a DVOM, check for a short to ground between the DLC (Data Link Connector) C251 Pin 14 to ground.
e. If the resistance is less than 100k ohms, repair circuit. If greater than 100k ohms, proceed to Step 3f.
f. Using a DVOM, check for a short between the DLC (Data Link Connector) C251 Pin 6 to Pin 14.
g. If the resistance is not equal to 60 +/- 1.0 ohms repair circuit. If it is equal to 60 ohms, proceed to Step 4.
4. Check MSCAN Bus
a. With the negative battery terminal still disconnected, check the following circuits.
b. Using a DVOM, check the DLC (Data Link Connector) C251 Pin 3 to ground.
c. If the resistance is less than 100k ohms, repair circuit. If greater than 100k ohms, proceed to Step 4d.
d. Using a DVOM, check the DLC (Data Link Connector) C251 Pin 11 to ground.
e. If the resistance is less than 100k ohms, repair circuit. If greater than 100k ohms, proceed to Step 4f.
f. Using a DVOM, check the DLC (Data Link Connector) C251 Pin 3 to Pin 11.
g. If the resistance is not equal to 60 ohms, repair circuit. If it is equal to 60 f 1.0 ohms, proceed to Step 5.
5. Check for Power in SJB (Smart Junction Box) Fuse 24
a. Reconnect the negative battery terminal.
b. Verify power is present at fuse 24 in the SJB.
c. If power is present, go to Step 6.
d. If power is not present, trace, and repair power circuit.
6. Check Cluster Connection
a. Remove the cluster per Workshop Manual (WSM), Section 413-01. Disconnect the instrument cluster connector and check for corrosion, pushed out pins, and spread terminals. Reconnect all of the instrument cluster connectors and make sure they seat correctly. Try to start the vehicle.
b. If the vehicle does not start, go to Step 7.
c. If the vehicle does start, the system is operating correctly at this time. A loose or corroded connector may have caused the concern. Return the vehicle to service
7. Check for Hot-at-all-Times Power at Cluster
a. Place key in OFF position. Disconnect instrument cluster Connector C220. Measure the voltage between the instrument cluster C220 Pin 1, Circuit 5BP24 (VT/RD), harness side and Pin 13, Circuit GD145 (BK/BU)
b. If voltage is greater than 10 volts, go to Step 8.
c. If voltage is less than 10 volts, reverify the SJB Fuse 24 is OK. If OK, repair the open circuit.
8. Check for Run/Start Power at Cluster
a. Place key in RUN position. Measure the voltage between the instrument cluster C220 Pin 2, Circuit CDC34 (WH/OG), harness side and Pin 13, Circuit GD145 (BK/BU).
b. If voltage is greater than 10 volts, go to Step 9.
c. If voltage is less than 10 volts, repair the circuit. Then attempt to start the vehicle. If vehicle starts, return the vehicle to service.
9. Check Ground Circuit
a. Place key in OFF position. Measure the resistance between the instrument cluster, harness side, and C220 Pin 13 GD145 (BK/BU).
b. If the resistance is greater than 5 ohms, repair the open circuit.
c. If the resistance is less than 5 ohms, install a new instrument cluster. Refer to WSM Section 413-01.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION DESCRIPTION TIME
061007A 2006 Explorer/Mountaineer 0.9 Hr.
2007 Explorer Sport Trac:
Replace The Instrument
Cluster (Do Not Use With
10838A)
MT061007 Claim Additional Labor Actual
Required As Actual Time Time
Or Use SLTS Operation If
Available
DEALER CODING
CONDITION
BASIC PART NO. CODE
10849 42
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