TEST
ACTION
APPLICABILITY
6
Turn the ignition off.
Disconnect the A/C - Heater Control Module C1 harness connector.
NOTE: Make sure that the Rear Blower Rear Control Switch C2 harness
connector is connected to the Rear Blower Rear Control Switch.
Measure the resistance of the Rear Blower Rear Control Switch, Rear Blend
Potentiometer as follows:
Turn the Rear Blend knob to full hot.
Measure the resistance between the 5 Volt Supply circuit and the Rear Temperature
Feedback Signal circuit at the A/C - Heater Control Module C1 harness connector.
The resistance should be approximately 800 ohms.
Slowly rotate the Rear Blend knob from full hot to full cold while viewing the DVOM.
The reading should change fluidly from approximately 800 to 10.5K ohms.
Turn the Rear Blend knob to full hot.
Measure the resistance between the 5 Volt Supply circuit and the Rear Temperature
Return circuit at the A/C - Heater Control Module C1 harness connector. The
resistance should be approximately 10.9K ohms.
Slowly rotate the Rear Blend knob from full hot to full cold while viewing the DVOM.
The reading should stay steady at approximately 10.9K ohms.
Turn the Rear Blend knob to full hot.
Measure the resistance between the Rear Temperature Return circuit and the Rear
Temperature Feedback Signal circuit at the A/C - Heater Control Module C1 harness
connector. The resistance should be approximately 10.2K ohms.
Slowly rotate the Rear Blend knob from full hot to full cold while viewing the DVOM.
The reading should change fluidly from approximately 10.2K to 800 ohms.
Are all of the resistance measurements as specified?
All
Yes
→
Replace the A/C - Heater Control Module in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the Rear Blower Rear Control Switch in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
553
HEATING & A/C
REAR BLEND POT CIRCUIT OPEN (ACTIVE) - MTC —
Continued
Summary of Contents for Caravan 2003
Page 24: ...NOTES xxiv ...
Page 64: ...NOTES 40 ...
Page 65: ...7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 41 ...
Page 1080: ...C O N N E C T O R P I N O U T S 1056 CONNECTOR PINOUTS ...
Page 1119: ...10 2 2 BASE AUDIO SYSTEM S C H E M A T I C D I A G R A M S 1095 SCHEMATIC DIAGRAMS ...
Page 1123: ...10 3 3 FRONT ATC RHD S C H E M A T I C D I A G R A M S 1099 SCHEMATIC DIAGRAMS ...
Page 1125: ...10 4 COMMUNICATION S C H E M A T I C D I A G R A M S 1101 SCHEMATIC DIAGRAMS ...
Page 1130: ...10 6 EXTERIOR LIGHTING S C H E M A T I C D I A G R A M S 1106 SCHEMATIC DIAGRAMS ...
Page 1136: ...10 9 INTERIOR LIGHTING S C H E M A T I C D I A G R A M S 1112 SCHEMATIC DIAGRAMS ...
Page 1143: ...10 10 7 REAR BLOWER MOTOR S C H E M A T I C D I A G R A M S 1119 SCHEMATIC DIAGRAMS ...
Page 1145: ...10 11 MEMORY SYSTEM S C H E M A T I C D I A G R A M S 1121 SCHEMATIC DIAGRAMS ...
Page 1146: ...10 12 OVERHEAD CONSOLE S C H E M A T I C D I A G R A M S 1122 SCHEMATIC DIAGRAMS ...
Page 1147: ...10 13 POWER DOOR LOCKS RKE S C H E M A T I C D I A G R A M S 1123 SCHEMATIC DIAGRAMS ...
Page 1150: ...10 16 POWER LIFTGATE SYSTEM S C H E M A T I C D I A G R A M S 1126 SCHEMATIC DIAGRAMS ...
Page 1155: ...10 20 VEHICLE THEFT SECURITY SYSTEM S C H E M A T I C D I A G R A M S 1131 SCHEMATIC DIAGRAMS ...
Page 1157: ...10 21 WIPERS FRONT AND REAR S C H E M A T I C D I A G R A M S 1133 SCHEMATIC DIAGRAMS ...
Page 1158: ...NOTES 1134 ...
Page 1160: ...11 2 PCI BUS LAB SCOPE PATTERN C H A R T S A N D G R A P H S 1136 CHARTS AND GRAPHS ...