Caravan V6-181 3.0L SOHC VIN 3 FI (1987)
Turn Signal Switch: All Technical Service Bulletins
Turn Signal Switch - Momentary Loss of Ground
Models
1987-1/2 "S" With 2.5L or 3.0L Engine With Automatic Transmission and/or Speed Control
Subject
Intermittent DropOut of Speed Control or Torque Converter Lock-Up
Index
ELECTRICAL
Date
July 20, 1987
No..
08-18-87 (C21-08)
P-2596
SYMPTOM/CONDITION
Drop out of speed control and/or torque converter lock-up may occur with movement of the turn signal switch. Using the lane change function of the
switch may produce this condition.
DIAGNOSIS
1.
Remove the lower steering column cover and the hazard warning flasher.
2.
Turn on the hazard flasher switch.
FIGURE 1
3.
Using a digital volt/ohmmeter set on the 1K ohm scale, measure the resistance between the D4 (18wt) circuit and a good body ground. The D4
(18wt) circuit can be found in the 6-way wiring connector to the stop lamp switch (Figure 1). The reading should be 0.33 K ohms +/- 0.03 K ohms.
NOTE:
BEFORE MEASURING RESISTANCE WITH A DIGITAL VOLT/OHMMETER, A ZERO POINT MUST BE ESTABLISHED.
THIS CAN BE ACCOMPLISHED BY CROSSING THE LEADS OF THE OHMMETER AND NOTING THE READING ON
THE DIGITAL DISPLAY. THIS IS THE ZERO POINT. ALL READINGS SHOULD BE CALCULATED FROM THIS POINT.
4.
If the reading is outside the specified range, proceed with the following repair procedure.
