GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 Jimmy - 2WD 🢒 Body and Accessories 🢒 Body Rear End 🢒 Gate Ajar Indicator Inoperative

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Instrument Cluster System Check

2

Did you perform the BCM Diagnostic System Check?

--

Go to Step 3

Go to Diagnostic System Check - Body Control System in Body Control System

3

Did you perform the Lift Window Release System Check?

--

Go to Step 4

Go to Liftgate Window Release System Check in Body Rear End

4
  1. Using the scan tool, select Instrument Panel Cluster.
  2. Select Data Display.
  3. Select OUTPUTS.

Does the REAR GATE/DOOR output indicate CLOSED with the endgate/liftgate open?

--

Go to Step 5

Go to Step 12

5
  1. Using the scan tool, select Body Control Module.
  2. Select Data Display.
  3. Select Data List.
  4. Select INPUT 1.

Does the REAR GATE/DOOR output indicate CLOSED with the endgate/liftgate open?

--

Go to Step 6

Go to Instrument Cluster System Check or Diagnostic System Check - Body Control System in Body Control System

6
  1. Turn the ignition switch to the RUN position.
  2. Ensure that the gate is open.
  3. Connect a DMM to ground.
  4. Backprobe the BCM connector C2 (BLU) terminal B10 (CKT 1303).

Is battery voltage present?

--

Go to Step 7

Go to Step 13

7
  1. Connect a fused jumper lead to ground.
  2. Backprobe the BCM connector C2 (BLU) terminal B10 (CKT 1303).

Is the GATE AJAR indicator on the IP illuminated?

--

Go to Step 8

Go to Step 13

8
  1. Access the gate ajar switch.
  2. Disconnect the gate ajar switch.
  3. Turn the ignition switch to the RUN position.
  4. Using the J 35616-A , jumper the gate ajar switch connector terminal B to terminal D.

Is the GATE AJAR indicator on the IP illuminated?

--

Go to Step 14

Go to Step 9

9

Using the J 35616-A , jumper the gate ajar switch connector terminal B to ground.

Is the GATE AJAR indicator on the IP illuminated?

--

Go to Step 10

Go to Step 11

10

Locate and repair the open or the high resistance in CKT 1350 between the gate ajar switch terminal D and G420 or G450. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

11

Locate and repair the open or the high resistance in CKT 1303 between the gate ajar switch terminal B and BCM connector C2 terminal B10.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

12

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

Go to Instrument Cluster System Check

--

13
  1. Replace the BCM. Refer to Body Control Module Replacement in Body Control System.
  2. Reconnect all of the disconnected components.
  3. Program the BCM with the proper calibrations.
  4. Perform the Passlock™ Learn Procedure using the scan tool.
  5. Using the scan tool, clear all of the DTCs.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

14

Replace the gate ajar switch.

Is the repair complete?

--

Go to Instrument Cluster System Check

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