Check Engine Lamp Comes On and Fault Code 13
91chrysler07
NO.: 18-09-91
GROUP: DRIVEABILITY
DATE: Sept. 23, 1991
SUBJECT: Check Engine/Power Loss Lamp On - 3.0L Engine
MODELS:
1989 (AA) SPIRIT/ACCLAIM
1988-89 (AC) DYNASTY/NEW YORKER/LANDAU/SALON
1989 (AG) DAYTONA
1989 (AJ) LEBARON COUPE/LEBARON CONVERTIBLE
1987-89 (AS) CARAVAN/GRAND CARAVAN/CARAVAN C/V
VOYAGER/GRAND VOYAGER
SYMPTOM/CONDITION:
The vehicle's "Check Engine/Power Loss" lamp comes on and Fault Code 13 "Map Pneumatic Change" is set into the diagnostic system.
DIAGNOSIS:
Using the DRB II tester and the appropriate diagnostic manual, verify that Fault Code 13 "MAP Pneumatic Change", and no other fault code, is present. Visually inspect both the MAP sensor vacuum hose and wiring connector to insure proper installation. Perform the applicable tests in the diagnostic manual to verify that the MAP sensor is operating properly.
PARTS REQUIRED:
1 MAP Sensor Relocation Package 4638458
Package Contents:
1 Cap Plug (1987-88 vehicles) 3580172
1 Cap Plug (1989 vehicles) 4241618
1 Purge Jumper Assembly 4669038
Consisting of:
1 In-Line Vacuum Connector 4201275
1 Vacuum Tee 33000227
1 11" Vacuum Hose 4104272
1 Bleed/Hose Assembly 4669042
Consisting of:
1 Vent 53007494
1 1" Vacuum Hose 4713956
1 Vacuum Tee 4669041
2 Vacuum Hose With 90 Degree Bend 4669044
1 Bracket 4686013
1 Wiring Harness 4687141
5 Tie Wraps 6015756
REPAIR PROCEDURE:
This repair involves relocation of the MAP sensor.
1. Being sure that ignition key is in the OFF position, disconnect the negative battery cable.
2. Disconnect wiring connector, vacuum hose and attaching bolts. Remove MAP sensor from its present location.
3. Remove MAP sensor hose from vacuum tree on right side of intake manifold and install cap plug (3580172 for 1987 and 1988 vehicles or 4241618 for 1989 vehicles) in its place.
4. Loosen clamps and remove throttle body/air filter intake hose.
5. Wiring Harness Installation Procedure:
If MAP sensor was mounted on the alternator bracket follow Step A. If MAP sensor was mounted on the right side shock tower or on the bulkhead follow Step B.
A) Connect the FEMALE end of the wiring harness (4687141) to the original MAP sensor connector. Route the harness along the backside of the intake manifold toward the throttle body. The harness should be secured to the fuel line and to the two wiring support brackets at the rear of the intake manifold using the supplied tie wraps.
B) Remove the two pieces of tape on the wiring harness and extend the harness to its full length. Connect the FEMALE end of the harness to the original MAP sensor connector. If MAP sensor was mounted on the shock tower; route the harness to the right side of the motor mount and the two rear engine wiring support brackets. Secure using the supplied tie wraps. If MAP sensor was mounted on the bulkhead; route the harness to the alternator bracket and the two rear engine wiring support brackets. Secure using the supplied tie wraps.
6. Attach original MAP sensor to the bracket (4686013) supplied in the package.
Figure 1:
7. Loosen throttle body retaining nut, shown in Figure 1, enough to allow MAP sensor bracket to slide over throttle body stud.
Figure 2:
8. Position MAP sensor and bracket so that MAP sensor vacuum port points straight down. Torque nut to 25 N-m (225 in.lbs.).
9. Disconnect the intake manifold end of the formed purge hose that extends from the intake manifold nipple to the "F" shaped connector (Figure 2).
Figure 3:
10. Assemble the MAP sensor bleed/hose assembly (4669042) as shown in Figure 3. Install to nipple on intake manifold. Position the MAP bleed valve as close to vertical as possible.
Figure 4:
11. Cut the existing PVC hose as shown in Figure 2.
12. Assemble the purge jumper assembly (4669038) as shown in Figure 4. Install between the formed purge hose (disconnected in Step 9) and the PVC hose (cut in Step 11). Connect the "Tee" end to the PVC hose and "In-line" end to the formed purge hose.
Figure 5:
NOTE: TO PREVENT INTERFERENCE WITH THE THROTTLE LINKAGE, THE PURGE JUMPER ASSEMBLY MUST BE ROUTED UNDER THE INTAKE MANIFOLD (Figure 5). DO NOT ROUTE IT OVER THE TOP OF THROTTLE LINKAGE.
13. Connect vacuum hose to MAP sensor.
14. Connect wiring harness connector to MAP sensor.
15. Install throttle body/air filter intake hose and tighten clamps.
16. Use the DRB II to erase any fault codes and perform the applicable verification tests.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No. 08-14-15-94 . . . . . . . . . . . . . . . . . 0.8 Hrs.
FAILURE CODE: 58 - Internal Defect