Question about 2004 Toyota 4Runner
My 2004 Toyota 4-runner aircondition switch keep on flashing. I discovered that the a/c compressor does not engage. The VSC off light comes up any time the gear is engaged. But the still move normally.
Re gas the unit
if problem persists check for a blockage but this sort of work can only be done with special machine and is beyond the scope of a home repair
Posted on Nov 04, 2008
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Mar 19, 2016 | 2004 Toyota 4Runner
Sep 09, 2011 | 1995 Toyota 4Runner
I've made up the following instructions, on how to clear VSC & TRAC Warning lights:
Zero Point Calibration of Yaw Rate and Deceleration Sensors Using Paper Clips (or jumper wires).
First, locate the 16-pin ODB II connector under the steering wheel (beneath the dash). The pins are numbered sequentially backwards from right to left (from the wide side of the connector looking at it from underneath).
Take two normal-sized paper clips (or suitable jumper wires). If using paper clips, straighten one edge of one of the paper clips. For the other, bend it open to a 90-degree angle (like an elbow).
Insert one paper clip/wire into pin # 14 (Ts), and the other paper clip/wire into pin # 4 (CG) of the OBD II connector - DO NOT allow the paper clips/wires to make contact at this point. 1. Ensure the shift lever is in "P" range. Verify that the VSC indicator light is illuminated, indicating the Recorded Zero point is erased.
Refer to diagram below:
2. Turn the ignition switch to "ON" (not start).
3. Momentarily touch the two paper clips/wires together (short) and separate again (open) - Repeat this process 5 times (within 8 seconds of turning ignition on).
4. Turn the ignition switch "OFF".
5. Remove both paper clips/jumper wires from the OBD II connector.
6. Turn the ignition switch "ON" (not start) - wait until VSC warning light turns off (approx. 20 seconds), then wait 2 seconds.
7. Turn the ignition switch "OFF".
9. Re-insert paper clips/jumper wires to terminals #4 & #14 of the OBD II connector (as per above diagram).
10. Turn the ignition switch "ON" (not start) - VSC warning light should remain illuminated for 4 seconds, then start flashing at 0.13 second intervals.
12. After VSC warning light flashes for 2 seconds, turn the ignition switch "OFF".
13. Remove paper clips/jumper wires from the OBD II connector.
Drive your vehicle to confirm VSC & TRAC warning lights have been reset and no longer illuminate.
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1. Ensure the shift lever is in "P" range.
Verify that the VSC indicator light is illuminated, indicating the Recorded Zero point is erased.
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