Step
| Action
| Value(s)
| Yes
| No
|
1
| Has the vehicle been inspected
for diagnostic trouble codes (DTC's)?
| --
| Go to
Step 2
| Refer to Engine Controls
|
2
|
- Use a fused 3 amp jumper in order to backprobe from the
instrument cluster head-up display (HUD) harness connector terminal A3 and
ground.
- Set the instrument cluster HUD dimmer switch to the ON position.
- Turn the ignition switch to the RUN position.
Is the check gauges indicator ON after the initial self-test?
| --
| Go to
Step 4
| Go to
Step 3
|
3
|
- Replace the instrument cluster head-up display (HUD). Refer to
Head Up Display Module Replacement
.
- Inspect the system.
Is the symptom still present?
| --
| --
| System OK
|
4
|
- Disconnect the oil pressure indicator switch.
- Turn the ignition switch to the RUN position.
- Connect a fused 3 amp jumper between the oil pressure indicator
switch terminal A and ground.
Is the check gauges indicator ON after the initial self-test?
| --
| Go to
Step 5
| Go to
Step 7
|
5
| Use a DMM in order to measure
the resistance between the oil pressure indicator switch terminal A and ground.
Does the DMM show a short to ground?
| --
| Go to
Step 8
| Go to
Step 6
|
6
|
- Replace the oil pressure indicator switch. Refer to Engine Controls.
- Inspect the system.
Is the symptom still present?
| --
| --
| System OK
|
7
|
- Repair the open or the poor connection in CKT 31 between
the instrument cluster HUD harness connector terminal A4 and the oil pressure
indicator switch.
- Inspect the system.
Is the symptom still present?
| --
| --
| System OK
|
8
|
- Turn the instrument cluster HUD dimmer switch to the ON position.
- Turn the ignition switch to the RUN position.
- Use a fused 3 amp jumper between the instrument cluster
HUD harness connector terminal A4 and ground.
Is the check gauges indicator ON after the initial self-test?
| --
| Go to
Step 9
| Go to
Step 3
|
9
|
- Disconnect the powertrain control module (PCM) harness connector
C2.
- Turn the ignition switch to the RUN position.
- Connect a fused 3 amp jumper between the PCM harness connector
C1 terminal 75 and ground.
Is the check gauges indicator on after the initial self-test?
| --
| Go to
Step 11
| Go to
Step 10
|
10
|
- Repair the open or the poor connection in CKT 35 between
the instrument cluster HUD harness connector terminal A4 and the PCM harness
connector C1 terminal 75.
- Inspect the system.
Is the symptom still present?
| --
| --
| System OK
|
11
|
- Use a fused 3 amp jumper in order to backprobe between
the instrument cluster HUD harness connector terminal A2 and ground.
- Set the instrument cluster HUD dimmer switch to the ON position.
- Turn the ignition switch to the RUN position.
Is the check gauges indicator ON after the initial self-test?
| --
| Go to
Step 12
| Go to
Step 3
|
12
|
- Disconnect the PCM harness connector C1.
- Turn the ignition switch to the RUN position.
- Connect a fused 3 amp jumper between the PCM harness connector
C1 terminal 36 and ground.
Is the check gauges indicator on after the initial self-test?
| --
| Go to
Step 14
| Go to
Step 13
|
13
|
- Repair the open or the poor connection in CKT 25 between
the instrument cluster HUD harness connector terminal A2 and the PCM harness
connector C1 terminal 36.
- Inspect the system.
Is the symptom still present?
| --
| --
| System OK
|
14
|
- Replace the PCM. Refer to Engine Controls.
- Inspect the system.
Is the symptom still present?
| --
| --
| System OK
|
