Engine Controls/Cooling Sys - Overheating/Poor A/C Perf.
TSB 12-1-1401/25/12
2.0L - OVERHEATS - LACKS A/C - COOLING FAN
INOPERATIVE - FUSE 17 OPEN
FORD:
2010-2012 Transit Connect
ISSUE
Some 2010-2012 Transit Connect vehicles equipped with the 2.0L engine may experience inoperative electric cooling fan due to a blown fuse. Customers may complain their vehicle overheats or A/C doesn't blow cold air. This symptom generally occurs under high ambient temperatures. The malfunction indicator lamp (MIL) may illuminate with diagnostic trouble code (DTC) P1285 (cylinder head temperature (CHT) over temp condition) and/or 1299 (cylinder head over temperature protection active).
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
1. Using Integrated Diagnostic System (IDS) Datalogger, command the low speed fan (LSF) and high speed fan (HSF) on. Do the fans operate in both high speed and low speed mode?
a. Yes - This procedure does not apply, refer to the Powertrain Control/Emissions Diagnosis (PC/ED) Section 3, Symptom Charts, for normal diagnostics.
b. No - Go to Step 2.
2. Check F17 (HSF fuse) for open circuit. Is F17 open?
a. Yes - Go to Step 3.
b. No - This procedure does not apply, refer to the PC/ED, Section 3, for normal diagnostics.
3. Check the LSF resistor for an open circuit. Is the LSF resistor open?
a. Yes - Replace the HSF F17 and the LSF fan resistor (which can cause the HSF F17 to blow). Proceed to Step 5.
b. No - Go to Step 4.
4. Check the total voltage and amperage draw of motors 1 and 2 at C1077 and C1074. Check each circuit separately.
a. Using IDS Datalogger, command the high speed fan on and wait for 3-4 seconds until the fan operation stabilizes.
b. Use the digital volt/ohm meter (DVOM) inductive pickup to check the amperage draw on the B+ circuits 15S-PA 16 and 155-PA6, at C1077 and C1074. Measure and record the total electric current to the cooling fan motors 1 and 2.
c. Using a DVOM, check the voltage on the B+ circuits 15S-PA 16 and 155-PA6, at C1077 and C1074 (pin 1). Measure and record the total voltage at the cooling fan motors 1 and 2.
d. Compare recorded readings to the chart. (Figure 1) Does your measured reading for voltage and amperage lie within the shaded area of the graph shown? (Figure 1)
(1) Yes - Do not replace the cooling fan. Fan operating as intended. Proceed to Step 5.
(2) No - Replace the cooling fan and shroud assembly. Proceed to Step 5.
5. Reprogram the powertrain control module (PCM) to the latest calibration using IDS release 76.04 and higher or 77.01 and higher. This new calibration is not included in the VCM 2012.1 DVD. Calibration files may also be obtained at the website.
6. If necessary, check and adjust coolant level.
Parts Block
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.
OPERATION DESCRIPTION TIME
120114A 2010-2012 Transit 0.6 Hr.
Connect: Diagnose,
Replace The Fuse
Resistor And Reprogram
The PCM (Do Not Use
With Any Other Labor
Operations)
120114B 2010-2012 Transit 0.7 Hr.
Connect: Diagnose,
Replace The Fuse, Test
Resistor, And Reprogram
The PCM (Do Not Use
With Any Other Labor
Operations)
120114C 2010-2012 Transit 0.9 Hr.
Connect: Diagnose,
Replace The Fuse, Test
Resistor, Replace The Fan
Module And Reprogram
The PCM (Do Not Use
With Any Other Labor
Operations)
DEALER CODING
CONDITION
BASIC PART NO. CODE
9A819 42
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