Workshop Manual

RESTRAINT CONTROL SYSTEM
9J1–24
5. This test determines whether the malfunction is in
CKT IB08–YEL/RED.
Diagnostic Aids:
An intermittent condition is likely to be caused by a short
to B+ in the passenger air bag assembly circuit. Inspect
CKTs IB07–YEL/GRN and IB08–YEL/RED carefully for
cutting or chafing. If the wiring pigtail of the passenger air
bag assembly is damaged, the component must be
replaced. A careful inspection of CKT IB07–YEL/GRN
and IB08–YEL/RED, including the passenger air bag
assembly pigtail is essential to ensure that the
replacement SDM will not be damaged.
DTC 19 Passenger Deployment Loop Short To Voltage
CAUTION: When DTC 19 has been set, it is necessary to replace the SDM. Setting DTC 19 and 25 or 51 or 53
will also cause DTC 71 to set. When a scan tool “CLEAR CODES” command is issued and the malfunction
is no longer present, DTC 71 will remain current. Ensure that the short to voltage condition is repaired prior
to installing a replacement SDM to avoid damaging the SDM.
Step Action Yes No
1 Was the “SRS Diagnostic System Check” performed?
Go to Step 2
Go to the “SRS
Diagnostic
System Check.”
2 1. When measurements are requested in this chart use J–39200
DVM with correct terminal adapter from J–35616–A.
2. Ignition switch “OFF.”
3. Connect scan tool data link connector. Follow directions as
given in the scan tool operator’s manual.
4. Ignition switch “ON.”
5. Read passenger sense LO.
Is passenger sense LO more than 3.5 volts?
Go to Step 3 Go to Chart A .
3 1. Ignition switch “OFF.”
2. Disconnect passenger air bag assembly yellow 2–pin
connector behind the glove box assembly.
3. Leave driver air bag assembly connected.
4. Connect SRS driver / passenger load tool J–41433 and
appropriate adapter to passenger air bag assembly harness
connector.
5. Ignition switch “ON.”
Is passenger sense LO more than 3.5 volts?
Go to Step 4
Ignition switch
“OFF.”
Replace
passenger air
bag assembly.
Go to
Step 6
4 1. Ignition switch “OFF.”
2. Disconnect SDM.
3. Disconnect SRS driver / passenger load tool.
4. Measure resistance on SDM harness connector from terminal
“15” to terminal “12” (IGNITION 1).
Does J–39200 display “0L” (infinite)? Go to Step 5
Replace SRS
harness.
Go to Step 6
5 Measure resistance on SDM harness connector from terminal
“16” to terminal “12” (IGNITION 1).
Does J–39200 display “0L” (infinite)?
Go to Chart A .
Replace SRS
harness.
Go to Step 6
6 1. Reconnect all components, ensure all component are properly
mounted.
2. Ignition switch “ON.”
Is passenger sense LO less than 3.5 volts?
Ignition switch
“OFF.”Replace
SDM.Go to Step
7
Go to Chart A .
7 1. Reconnect all components, ensure all component are properly
mounted.
2. Clear diagnostic trouble codes.
Was this step finished?
Repeat the “SRS
Diagnostic
System Check.”
Go to Step 7