Chrysler Voyager. Manual — part 437
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Visually inspect the ABS Valve Fused B(+) circuit in the wiring harness. Look for any
sign of an intermittent short to ground.
Is the wiring harness OK?
All
Yes
→ Go To 4
No
→ Repair the ABS Valve Fused B(+) circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the CAB harness connector.
Note: Check connector - Clean/repair as necessary.
Using a test light connected to 12 volts, probe the ABS Valve Fused B(+) circuit fuse
terminal.
Did the test light illuminate?
All
Yes
→ Repair the ABS Valve Fused B(+) circuit for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Reconnect the CAB harness connector.
NOTE: The CAB harness connector must be reconnected for the results of
this test to be valid.
Using a test light connected to 12 volts, probe the ABS Valve Fused B(+) circuit fuse
terminal.
Did the test light illuminate?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the ABS Valve Fused B(+) fuse. If the fuse is open make
sure to check for a short to ground.
Perform ABS VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the CAB harness connector.
Inspect the CAB and CAB harness connector for damage.
Is there any broken, bent, pushed out, corroded or spread terminals?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 7
7
Turn the ignition off.
Using a 12-volt test light connected to ground, probe the B(+) supply at the ABS Valve
fuse terminal.
Did the test light illuminate?
All
Yes
→ Go To 8
No
→ Repair the ABS Valve Fused B(+) supply circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
37
BRAKES (CAB)
VALVE POWER FEED FAILURE —
Continued
TEST
ACTION
APPLICABILITY
8
Reinstall the ABS Valve fuse.
Disconnect the CAB harness connector.
Using a 12-volt test light connected to ground, probe the ABS Valve Fused B(+) circuit
at the CAB harness connector.
Did the test light illuminate?
All
Yes
→ Go To 9
No
→ Repair the ABS Valve Fused B(+) circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
9
Turn the ignition off.
Using a 12-volt test light connected to 12-volts, probe the ground circuits at the CAB
harness connector.
Did the test light illuminate?
All
Yes
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Repair the CAB Ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
10
Turn the ignition off.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Refer to any Hotline letters or Technical Service Bulletins that may apply.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Test Complete.
38
BRAKES (CAB)
VALVE POWER FEED FAILURE —
Continued
Symptom:
*BRAKE LAMP SWITCH INOPERATIVE
POSSIBLE CAUSES
CHECK BRAKE LAMP SWITCH OUTPUT
BRAKE LAMP SWITCH B+ OPEN
BRAKE LAMP SWITCH OPEN
BRAKE LAMP SWITCH OUTPUT CIRCUIT SHORT OR OPEN
CAB -- INTERNAL OPEN
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t in Inputs/Outputs, read the Brake Lamp Switch state.
Press and release the brake pedal.
Does the DRBIII
t display PRESSED and RELEASED?
All
Yes
→ The Brake Lamp Switch is OK.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Disconnect the Brake Lamp Switch harness connector.
Using a 12-volt test light connected to ground, check the Brake Lamp Switch Fused
B+ circuit.
Does the test light illuminate brightly ?
All
Yes
→ Go To 3
No
→ Repair the Brake Lamp Switch Fused B+ circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
3
Disconnect the Brake Lamp Switch harness connector.
Connect a jumper wire between the Brake Lamp Switch B+ and Brake Lamp Switch
Output circuits.
With the DRBIII
t in Inputs/Outputs, read the Brake Lamp Switch state.
Does the DRBIII
t display PRESSED?
All
Yes
→ Replace the Brake Lamp Switch in accordance with the Service
Information.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Disconnect the CAB harness connector.
Disconnect the Brake Lamp Switch harness connector.
Check the Brake Lamp Switch Output circuit for a short to voltage and for an open.
Is the Brake Lamp Switch Output circuit shorted or open?
All
Yes
→ Repair the Brake Lamp Switch Output circuit for a short to
voltage or an open.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
39
BRAKES (CAB)
Symptom:
*TRAC OFF INDICATOR NEVER/ALWAYS ON
POSSIBLE CAUSES
TRAC OFF SW GROUND OPEN
TRAC OFF SWITCH OPEN
TRAC OFF SWITCH SENSE CIRCUIT SHORT TO B+ OR OPEN
BCM -- NO TRAC OFF MESSAGE
CLUSTER INTERNAL FAULT-- TRAC OFF INDICATOR INOPERATIVE
CLUSTER-PERMANENT TRAC OFF INDICATOR
TRAC OFF SWITCH INTERNAL SHORT
TRAC OFF SWITCH SENSE CIRCUIT SHORT TO GROUND
BCM -- PERMANENT TRAC OFF MESSAGE
TEST
ACTION
APPLICABILITY
1
Note: If any DTC’s are present, they must be repaired prior to performing
this test.
Turn the ignition off.
Turn the ignition on.
Observe the TRAC OFF indicator.
Did the TRAC OFF indicator come on for several seconds then go out?
All
Yes
→ Go To 2
No. TRAC OFF Indicator does not come on.
No. TRAC OFF Indicator does not go out.
2
Disconnect the TRAC OFF Switch harness connector.
Using a 12-volt test light connected to 12-volts, check the TRAC OFF Switch Ground
circuit.
Does the test light illuminate?
All
Yes
→ Go To 3
No
→ Repair the TRAC OFF Switch Ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the TRAC OFF Switch harness connector.
Turn the ignition on.
Connect and disconnect a jumper wire between TRAC OFF Switch Ground and
TRAC OFF Switch Sense circuits.
Does the TRAC OFF Indicator light and then go out?
All
Yes
→ Replace the TRAC OFF switch.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 4
40
BRAKES (CAB)
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